Density. The ionization for a general weak acid, HA, can be written as follows: Because the acid is weak, an equilibrium expression can be written. The high-temperature phases of sodium orthophosphate, HT-Na3PO4, and of the solid solutions (Na2SO4)x(Na3PO4)1-x are characterized by their plastic crystalline state with dynamically disordered PO43- and SO42- anions and a remarkably high cation conductivity. TSP is used as a cleaning agent, builder, lubricant, food additive, stain remover, and degreaser. PO Error: equation KI+Na3PO4=KNa+IPO4 is an impossible reaction Please correct your reaction or click on one of the suggestions below: KI + Na3PO4 = K3PO4 + NaI KI + Na3PO4 = KPO4 + Na3I Instructions and examples below may help to solve this problem You can always ask for help in the forum Why aluminium nitride AlN has higher melting point than Lithium oxide? Screen capture done with Camtasia Studio 4.0. Anacid ionizationconstant (Ka)is the equilibrium constant for the ionization of an acid. 1 Answer. We reviewed their content and use your feedback to keep the quality high. Rated by 1 million+ students Get app now Login. Note that the normal boiling point of water increases as the concentration of sucrose increases. 11 what is the Kb of Na3PO4. Calculate the pH of 0.5 M Na3PO4 in aqueous solution ? Trisodium phosphate is produced by neutralization of phosphoric acid using sodium carbonate, which produces disodium hydrogen phosphate. Done on a Dell Dimension laptop computer with a Wacom digital tablet (Bamboo). Kb is related to the acid dissociation constant, Ka, by the simple relationship pKa + pKb = 14, where pKb and pKa are the negative logarithms of Kb and Ka, respectively. ], Sodium phosphates including monosodium phosphate, disodium phosphate, and trisodium phosphate are approved as food additives in the EU. What is the percent CsCl by mass in a 0.711 M CsCl solution that has a density of 1.091 C) Weak acid vs. strong base. Aweak baseis a base that ionizes only slightly in an aqueous solution. I wish I had you as a personal tutor. Is it because it wont dissociate to form either a base or an acid? So we start with 0.090 mol of both NH4 + and NH 3.After complete reaction with 0.0010 mol NaOH the resulting amounts of each are: 0.090 - 0.0010 = 0.089 mol NH4 0.090 + 0.0010 = 0.091 mol NH3 To use Henderson-Hasselbalch equation we need to know the pKa value. T=iK bm, where i = van Hoff's factor, K b = boiling point elevation constant, m = molality. Try It Now. These values are usually not measured but calculated from thermodynamical data and should not be treated too seriously. {{ nextFTS.remaining.months > 1 ? National Center for Biotechnology Information. Screen capture done with Camtasia Studio 4.0. pKa (HNO3)=-1.4 so Ka (HNO3)=25.119. Nov 23, 2010. you must have since you knew your 5 was wrong, right? PO43 + H2OHPO42 + OH ; Kb = 2.4 102. How many grams of Na3PO4 will be needed to produce 575mL of a solution that has a concentration of Na^+ ions of 1.40 M? For the definitions of Kan constants scroll down the page. 11.22 b. Kb for PO4 3- + H2O --> HPO4 2- + OH - is 4.5 X 10 3 A) 2.2 B) 1.82 C) 11.8 D) 12.2 a. Trisodium phosphate has gained a following as a nutritional supplement that can improve certain parameters of exercise performance. Acids with a pKa value of less than about -2 are said to be strong acids. This is a recorded trial for students who missed the last live session. {{ nextFTS.remaining.months }} The site owner may have set restrictions that prevent you from accessing the site. Na3PO4 is the reaction product of the complete neutralisation of H3PO4 ( a weak acid) with NaOH(a strong base) The salt Na3PO4 will be basic salt. It's possible your card provider is preventing Again the answer is Kw/Ka (HNO3), and since Ka (HNO3) is taken as around infinity if HNO3 is a strong acid, then this Kb is (around) 0. The figures below illustrate how the vapor pressure of water is affected by the addition of the non-volatile solute, NaCl. So you can only have three significant figures for any given phosphate species. The Kb value for ammonia is 1.8 x 10 a. O What's something you just don't understand? Ky75, Page 5 24. A lower pKb value indicates a stronger base. 1(2h)-Pyrimidinecarboxamide, N-Butyl-5-Fluoro-3, 1h-Imidazole, 4,5-Dihydro-2-(phenylmethyl)-, 1h-Purine-2,6-Dione, 3,9-Dihydro-1,3-Dimethyl-, 2,2-Bis(4-Hydroxy-3,5-Dibromophenyl)propane, 2,3-Butanediol, 1,4-Dimercapto-, (r-(r*,r*))- (9, 2,4-Pyrimidinediamine, 5-(3,4-Dichlorophenyl)-6-, 2,8,9-Triisobutyl-2,5,8,9-tetraaza-1-phosphabicyclo[3.3.3]undecane, 2,8,9-Trimethyl-2,5,8,9-tetraaza-1-phosphabicyclo[3.3.3]undecane, 2-((4-(dimethylamino)phenyl)azo)benzoic Acid, 2-(2,4-Dimethoxyphenyl)-5-Methylbenzimidazole, 2-(2,4-Dimethylphenyl)-5-Nitrobenzimidazole, 2-(4-Aminophenylmethyl)-5-Chlorobenzimidazole, 2-(4-Bromophenylmethyl)-5-Chlorobenzimidazole, 2-(4-Chlorophenyl)-Imidazo[4,5-B]pyridine, 2-(4-Chlorphenylmethyl)-5-Chlorobenzimidazole, 2-(4-Fluorophenyl)-Imidazo[4,5-B]pyridine, 2-(4-Methoxyphenylmethyl)-5-Nitrobenzimidazole, 2-(4-Methylphenyl)-Imidazo[4,5-B]pyridine, 2-(4-Methylphenylmethyl)-5-Chlorobenzimidazole, 2-(4-t-Butylphenyl)-Imidazo[4,5-B]pyridine, 2-Furansulfonamide, 4-(4-Methoxybenzoyl)-, 2-Furansulfonamide, 4-[(4-Hydroxyphenyl)sulfonyl, 2-Furansulfonamide, 4-[(4-Methoxyphenyl)sulfonyl, 2-Furansulfonamide, 4-[(4-Methylphenyl)sulfonyl], 2-Methyl-3-Chloromethylhydrochlorothiazide, 2-Piperidinecarboxamide, N-(2,6-Dimethylphenyl)-, 2-Propenoic Acid, 3-(2-Methoxyphenyl)-, (e)-, 2-Propenoic Acid, 3-(2-Methoxyphenyl)-, (z)-, 2-Propenoic Acid, 3-(3,4-Dihydroxyphenyl)-, (e)-, 2-Propenoic Acid, 3-(3-Methoxyphenyl)-, (e)-, 2-Propenoic Acid, 3-(4-Hydroxyphenyl)-, (e)-, 2-Pyrimidinecarboxylic Acid, Methyl Ester, 2-Thiophenesulfonamide, 4-(4-Hydroxybenzoyl)-, 2-Thiophenesulfonamide, 4-(4-Methoxybenzoyl)-, 2-Thiophenesulfonamide, 4-(4-Methylbenzoyl)-, 2-Thiophenesulfonamide, 4-[(3-Hydroxyphenyl)sulf, 2-Thiophenesulfonamide, 4-[(4-Hydroxyphenyl)sulf, 2-Thiophenesulfonamide, 4-[(4-Methoxyphenyl)sulf, 2-Thiophenesulfonamide, 4-[(4-Methylphenyl)sulfo, 2-Thiophenesulfonamide, 5-[(3-Hydroxypropyl)sulf, 2-Thiophenesulfonamide, 5-[(3-Hydroxypropyl)thio, 2-Thiophenesulfonamide, 5-[(4-Hydroxybutyl)sulfo, 2-Thiophenesulfonamide, 5-[(4-Hydroxybutyl)thio], 2-Thiophenesulfonamide, 5-[[3-(methoxyacetyl)oxy, 2-tert-Butyl-1,1,3,3-tetramethylguanidine, 2-tert-Butylimino-2-diethylamino-1,3-dimethylperhydro-1,3,2-diazaphosphorine, 3-((4-(dimethylamino)phenyl)azo)benzoic Acid, 3-Methyl-4h-Pyrido[2,3-E]-1,2,4-Thiadiazine 1,1-, 3-Methyl-4h-Pyrido[3,2-E]-1,2,4-Thiadiazine 1,1-, 3-Methyl-4h-Pyrido[4,3-E]-1,2,4-Thiadiazine 1,1-, 4-((4-(dimethylamino)phenyl)azo)benzoic Acid, 4-Chloro-2-Methylbenzenamine Hydrochloride, 4-Nitro-((4-(n-Dimethyl)aminophenyl)azo)benzene, 4h-Pyran-4-One, 5-Hydroxy-2-(hydroxymethyl)-, 5-(2-Chlorophenyl)oxymethyl-2-Amino-2-Oxazoline, 5-(2-Ethoxyphenyl)oxymethyl-2-Amino-2-Oxazoline, 5-(2-Methoxyphenyl)oxymethyl-2-Amino-2-Oxazoline, 5-(2-Methylphenyl)oxymethyl-2-Amino-2-Oxazoline, 5-(3-Dimethylaminophenyl)oxymethyl-2-Amino-2-Oxa, 5-(3-Nitrophenyl)oxymethyl-2-Amino-2-Oxazoline, 5-(4-Chlorophenyl)oxymethyl-2-Amino-2-Oxazoline, 5-(4-Methoxyphenyl)oxymethyl-2-Amino-2-Oxazoline, 5-(4-Methylphenyl)oxymethyl-2-Amino-2-Oxazoline, 5-(4-Nitrophenyl)oxymethyl-2-Amino-2-Oxazoline, 5-(4-n-Morpholinophenyl)oxymethyl-2-Amino-2-Oxaz, 6-Nh2-5-(n-Methylformylamino)-1,3-Dimethyluracil, 6-Nh2-5-(n-Methylformylamino)-3-Methyluracil, Acetic Acid, 2-[[5-(aminosulfonyl)-2-Thienyl]sul, Acetic Acid, 3-[4-(aminosulfonyl)phenyl]propyl E, Acetic Acid, 3-[[5-(aminosulfonyl)-2-Thienyl]sul, Acetic Acid, 5-[4-(aminosulfonyl)phenyl]pentyl E, Benzamide, 5-Bromo-2-Hydroxy-N,3-Dimethyl-, Benzeneacetic Acid, .alpha.-Hydroxy-.alpha.-Meth, Benzeneacetic Acid, 4-(1,1-Dimethylethyl)-, Benzenemethanol, .alpha.-(1-Aminoethyl)-, (r*,r*, Benzenemethanol, _-[1-(dimethylamino)ethyl]-, (r, Benzenesulfonamide, 3-Amino-4-[(2-Hydroxyethyl)s, Benzenesulfonamide, 3-Amino-4-[(3-Hydroxypropyl), Benzenesulfonamide, 3-Chloro-4-[(3-Hydroxypropyl, Benzenesulfonamide, 3-Fluoro-4-[(2-Hydroxyethyl), Benzenesulfonamide, 3-Fluoro-4-[(3-Hydroxypropyl, Benzenesulfonamide, 3-Fluoro-4-[(4-Hydroxybutyl), Benzenesulfonamide, 4-[(2-Hydroxyethyl)sulfonyl], Benzenesulfonamide, 4-[(2-Hydroxyethyl)thio]-, Benzenesulfonamide, 4-[(2-Hydroxyethyl)thio]-3-n, Benzenesulfonamide, 4-[(3-Hydroxypropyl)sulfonyl, Benzenesulfonamide, 4-[(3-Hydroxypropyl)thio]-, Benzenesulfonamide, 4-[(3-Hydroxypropyl)thio]-3-, Benzenesulfonamide, 4-[(4-Hydroxybutyl)sulfonyl], Benzenesulfonamide, 4-[(4-Hydroxybutyl)thio]-, Benzenesulfonamide, 4-[(5-Hydroxypentyl)thio]-, Benzenesulfonamide, 4-[3-Hydroxy-3-Methylbutyl)s, Benzenesulfonamide, 4-[3-Hydroxy-3-Methylbutyl)t, Benzenesulfonamide, 4-[[2-[(2-Methylpropyl)amino, Benzoic Acid, 2,3,5,6-Tetrafluoro-4-Methyl-, Benzoic Acid, 5-(aminosulfonyl)-2-[(2-Hydroxyeth, Benzoic Acid, 5-(aminosulfonyl)-2-[(3-Hydroxypro, Butanamide, 2-Amino-n-(2,6-Dimethylphenyl)-, Cinnamic Acid, 4-Hydroxy-3-Methoxy-, (e)-, Ethanamine, N,n-Dimethyl-2-[5-Methyl-2-(1-Methyl, Hydrazinecarboxamide, 2-(phenylmethylene)-, Imidazo[5,1-B]quinazolin-9(2h)-One, 1,3-Dihydro-, Imidazo[5,1-B]quinazolin-9(2h)-One, 2-Butyl-1,3-, Phenol, 2,2'-((1-Methyl-1,2-Ethanediyl)bis(nitri, Piperidine, 1-(4,4-Dimethyl-1-Phenylcyclohexyl)-, Propanoic Acid, 2-(2,4-Dichlorophenoxy)-, (r)-, Thieno[2,3-B]furan-2-Sulfonamide, 5-(4-Morpholin, Thieno[2,3-B]furan-2-Sulfonamide, 5-[[(2-Fluoroe, Thieno[2,3-B]thiophene-2-Sulfonamide, 5-[[(2-Hyd, Thieno[2,3-B]thiophene-2-Sulfonamide, 5-[[(2-Met, Thieno[2,3-B]thiophene-2-Sulfonamide, 5-[[[2-(me, Thieno[3,2-B]thiophene-2-Sulfonamide, 5-[[(2-Met. Finally, calculate the freezing point depression. {{ nextFTS.remaining.days > 1 ? Here are some of the values of weak and strong acids and bases dissociation constants used by BATE when calculating pH of the solution and concetrations of all ions present. As someone who has to write intricate Excel worksheets for preparing buffers at our company, this program [Buffer Maker] seems amazing. The boiling point of a solution, then, will be greater than the boiling point of the pure solvent because the solution (which has a lower vapor pressure) will need to be heated to a higher temperature in order for the vapor pressure to become equal to the external pressure (i.e., the boiling point). Answer to: Consider an aqueous 1.00 m solution of Na3PO4, a compound with useful detergent properties (kb = 0.51 C m-1). Thus the product of the acid constant for a weak acid and the base constant for the conjugate base must be Kw, and the sum of p Ka and p Kb for a conjugate acid-base pair is 14. An equilibrium expression can be written for the reactions of weak bases with water. For the reactions of dissociation of base: Next dissociation steps are trated the same way. Calculate the pH of the salt solution of Ca (OOCCH_3)_2, 0.1 M. Calculate the pH of the salt solution of AlCl, 0.1 M, K=10^+. TABLE OF CONJUGATE ACID-BASE PAIRS Acid Base K a (25 oC) HClO 4 ClO 4 - H 2 SO 4 HSO 4 - HCl Cl- HNO 3 NO 3 - H 3 O + H 2 O H 2 CrO 4 HCrO 4 - 1.8 x 10-1 H 2 C 2 O 4 (oxalic acid) HC 2 O 4 - 5.90 x 10-2 [H 2 SO 3] = SO 2 (aq) + H2 O HSO {\displaystyle {\ce {Na3PO4.1/4NaOCl.11H2O}}} Answer to: Which of the following compounds can be combined with Na3PO4 to make a buffer solution? Calculate the hydronium ion concentration and pH for a 0.043 M solution of sodium format, NaHCO_2. Jawaban - Manakah diantara berikut titik beku yang paling tinggi nh4c1 0,1 m na3po4 0,1m al2(so) 0,1m co(nh2)2 0,1m - jawaban-sekolah.com Now consider 1 mole of N a3P O4 which has a mass of 164g: 3 23 = 69g is sodium, 31g is phosphorous, 4 16 = 64g is oxygen. Given that HPO is a triprotic acid for which Ka1 = 7.2 10, Ka2 = 6.3 10 and Ka3 = 4.2 10, the Kb for HPO is 1.6 10. For a better experience, please enable JavaScript in your browser before proceeding. {{ nextFTS.remaining.months > 1 ? Calculate the pH of a solution formed by mixing 250 mL of 0 M NH4Cl with 100. mL of 0 M NH3. Calculate the pH of a 0.300 M Na3PO4 solution. What is the osmotic pressure of a solution prepared by adding 13.65 g of sucrose (C 12 H 22 O 11) to enough water to make 250 mL of solution at 25 C? 'months' : 'month' }}, {{ nextFTS.remaining.days }} You'll get a detailed solution from a subject matter expert that helps you learn core concepts. From the molecular equation find the overall ionic and net ionic: Molecular: H3PO4 (aq) + 3NaOH (aq) --> Na3PO4 (aq) + 3H2O (l) Write the balanced molecular, complete ionic, and net ionic equations for the reactions that occur when the following are mixed. As with acids, bases can either be strong or weak, depending on their extent of ionization. However, for simplicity, only non-volatile solutes will be considered here. Calculate the pH of the solution after the addition of 0 moles of solid LiOH. H I think that is what you call it. Note the interface between liquid water (below) and water vapor (above). If 0.50 mole of BaCl2 is mixed with 0.20 mole of Na3PO4 , the maximum number of moles of Ba3 (PO4)2 that can be formed is . Acids are classified as either strong or weak, based on their ionization in water. If 0.50 mole of BaCl2 is mixed with 0.20 mole of Na3PO4 , the maximum number of moles of Ba3 (PO4)2 that can be formed is . One example is arsenic acid, H 3AsO 4, a triprotic acid.It has three equilibrium expressions associated with its reaction with water: H 3AsO 4 + H 2O ' H 2AsO 4-+ H3O + K a1 = 5.0 x 10-3 H 2AsO 4 a: Na3PO4 and AgNO3 b: K2SO4 and Na2CO3 C: Pb(NO3)2 and Na2CO3 d: BaCl2 and KOH. Calculate the pH of a 0.0798 M H3PO4 solution. Thanks a ton guys.. If 0.50 mole of BaCl2 is mixed with 0.20 mole of Na3PO4 , the maximum number of moles of Ba3 (PO4)2 that can be formed is . Since HT-Na3PO4 possesses a fully occupied cation sublattice (no vacancies), it has been proposed that cation transport and anion . E) 8. Phosphates are available from a number of other sources that are much milder than TSP. Architektw 1405-270 MarkiPoland. For that to be the case, the energy released during when the ion-dipole attractions form has . Potassium Nitrite Calculate the pH of 0.10 M KNO2 solution. Requested URL: byjus.com/chemistry/sodium-phosphate/, User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/103.0.5060.114 Safari/537.36 Edg/103.0.1264.62. You can create your own Flashcards and upload decks Why is a sodium phosphate buffer used for the pH 6.24 buffer? Calculate the pH of an aqueous solution with OH- = 1.57 x 10-9 M. Calculate the pH of an aqueous solution with OH- = 2.63 x 10-4 M. Potassium Nitrite Calculate the pH of 0.10 M KNO2 solution. 'days' : 'day' }} Answer: E. A 1 L buffer solution is 0 M in HF and 0 M in LiF. How many moles of sodium ions are present in 2.50 L of 0.300 M Na3PO4? kcabwalc sdliug . You have the the following six independent equations in order to specify the unknown concentrations of six species as present in an aqueous solution consisting of $\pu{0.1 M}$ $\ce{H3PO4}$ and $\pu{0.05M}$ $\ce{Na3PO4}$: Ka of HF = 3.5 104 and Ka of HClO = 2.9 108, What is the pH of a solution that has 0.200 M HF and 0.200 M HCN? More. CCRIS 7086. 'months' : 'month' }} State whether the following aqueous solutions are expected to be acidic, basic or neutral As we can see in the second step, HPO is the conjugate base of HPO. 1. No tracking or performance measurement cookies were served with this page. Starts Today. [12] The United States Food and Drug Administration lists sodium phosphates as generally recognized as safe.[13][14]. Dissociation: the process by which compounds split into smaller constituent molecules, usually reversibly. Trisodium phosphate solution. {{ nextFTS.remaining.days }} asked Sep 28, 2022 in Chemistry by . Trisodium phosphate was at one time extensively used in formulations for a variety of consumer-grade soaps and detergents, and the most common use for trisodium phosphate has been in cleaning agents. In this video we'll write the correct name for Na3PO4.To write the name for Na3PO4 well use the Periodic Table and follow some simple rules. Kb is the molal boiling point elevation constant, and On the contrary inorganic bases - like NaOH, KOH, LiOH, Ca(OH)2 - increase pH dissociating. The cation is Na^+ (it has a charge of +1) and there are three of them. National Library of Medicine. pH = Conjugate Acid Base Hydrolysis Reaction Kb c pka E pKb 10.66 Calculations: 58 Table 2. nKa Values / Acid . FOIA. im sorry to be a bit slow on this, but why couldnt you use k1 for this problem? We can calculate its basic dissociation constant (Kb) using the following expression. Astrong baseis a base, which ionizes completely in an aqueous solution. The acid equilibrium problems discussed so far have focused on a family of compounds known as monoprotic acids.Each of these acids has a single H + ion, or proton, it can donate when it acts as a Brnsted acid. (from highest freezing point to lowest freezing poinT) Thanks. The normal freezing point of water is 0.0C. So we start with 0.090 mol of both NH4 + and NH 3.After complete reaction with 0.0010 mol NaOH the resulting amounts of each are: 0.090 0.0010 = 0.089 mol NH4 0.090 + 0.0010 = 0.091 mol NH3 To use Henderson-Hasselbalch equation we need to know the pKa value. (K. = 7.5 x 10-3, Ka, = 6.2 x 10-8, K, = 4 x 10-13) What is the poth, 0.5 m Na solution Paperport your answer a: A weak acid has a pKa value in the approximate range of -2 to 12 in water. In the polymerization of ethane-1,2-diol and butanedioic acid, is it an addition or a condensation reaction? Policies. How do you arrange these aqueous solutions in order of decreasing freezing point: 0.10 m Na3PO4, 0.35 m NaCl, 0.20 m MgCl2, 0.15 m C6H12O6, and CH3OOH? Click hereto get an answer to your question What is the pOH of a 0.5 M Na3PO4 solution ? Remember. D The overall dissolution of LiCl is exothermic; this is indicated by the temperature of the water rising. Ka and pKa 163.94 g/mol. {{ nextFTS.remaining.days }} So, no basic action either. Not exactly infinity, huh. The following graph shows the normal boiling point for water (solvent) as a function of molality in several solutions containing sucrose (a non-volatile solute). For reference or additional information, please contact websupport@aatbio.com It usually results in a bowel movement after 30 minutes to 6 hours. Starts Today, By clicking Sign up, I agree to Jack Westin's. By clicking Buy Now! This compound is also known as Trisodium Phosphate. In the Western world, phosphate usage has declined owing to ecological problems with the damage to lakes and rivers through eutrophication. For reference or additional information, please contact websupport@aatbio.com, Click here to see all available distributors, https://www.aatbio.com/data-sets/pka-and-pkb-reference-table, (nitrilotris(methylene))triphosphonic Acid, 1(2h)-Pyrimidinecarboxamide, 5-Fluoro-3,4-Dichlo, 1(2h)-Pyrimidinecarboxamide, 5-Fluoro-3,4-Dihydr. By the end of the 20th century, many products that formerly contained TSP were manufactured with TSP substitutes, which consist mainly of sodium carbonate along with various admixtures of nonionic surfactants and a limited percentage of sodium phosphates. The Kb for NH3 is 1 10-5. Note that the molal boiling point elevation constant, Kb, has a specific value depending on the identity of the solvent. C) 9. Please remember that only some of them are included in the trial version database, but you can always enter them manually for calculations. BPP Marcin Borkowskiul. At the same time, the Na3PO4 is a very different substance than Na + and PO4 3-.If you need to know how to balance chemical reactions, see my complete tutorial on balancing all types of chemical equations:Balancing Equations in 5 Easy Steps: https://youtu.be/zmdxMlb88FsMore Practice Balancing: https://youtu.be/Qci7hiBy7EQDrawing/writing done in InkScape. Besides, difference between pKa=-1 and pKa=-10 starts to influence calculation results for the solutions with very high ionic strengths, such calculations are dubious in any case. us from charging the card. . They are all defined in the help file accompanying BATE. 4 Ka=[H+][Al(OH)+2]/[Al+3] operating systems: XP, Vista, 7, 8, 10 single user license price: 24.95 - approximately $33 Buy Now! Therefore the percentage composition of each element is: 69 164 100 = 42.1%N a. = 141.98 g/mol) that has been dissolved in a 250 mL volumetric flask and diluted to the mark. The anion is phosphate, PO4^-3 and (it has a charge of -3). Toggle mobile menu. Because Na3PO4 has a polyatomic ion well also need to use a table of names for common polyatomic ions, in addition to the Periodic Table.Common Ion Table: https://breslyn.org/chemistry/naming/resources/common_ion_table.php---Keys for Naming Ternary Ionic Compounds---1. LIVE Course for free. 4 What is the pOH of a .22 M NaOH solution?