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So molar mass of the acid is its equivalent mass. Equivalent weight of H3PO4 = 98/3 . 3NaOH + H3PO4 = Na3PO4 + 3H2O also forms partially neutralised salts NaOH + H3PO4 = NaH2PO4 + H2O and 2NaOH + H3PO4 = Na2HPO4 … Finally, we will balance the OH and H. Since there are 3 of each on the left, there will be 3 H2O on the right. Sodium phosphate generally means Na3PO4. The reactions are: H3PO4 + NaOH ---> NaH2PO4 + H2O. Since there are 3 Na on the right, the NaOH must have a coefficient of three in front of it. Next, balance the Na. This is a very weak acid. In this video we will balance the equation Na2CO3 + H3PO4 = H2O + CO2 + Na3PO4 and provide the correct coefficients for each compound. If you are doing a titration, there are two end points. Sodium hydrogen phosphate, Na2HPO4, can sometimes be called sodium phosphate as can sodium dihydrogen phosphate, NaH2PO4. The third H+ is not significantly neutralized by NaOH in water because the Kw of water is about the same as the Ka3 of the H3PO4. Therefore, the final, balanced equation will be: H3PO4 … How do you balance naoh plus h3po4 equals na2hpo4 plus h2o? Equivalent weight of H3PO4 … Na 2 HPO 4 + NaOH → Na 3 PO 4 + H 2 O [ Check the balance ] ... Na2HPO4 + NaOH = Na3PO4 + H2O. In this reaction 1g equivalent NaOH reacts with one mole H3PO4. When writing ionic equations involving weak acids, and bases, we do not show them as being … Please register … Add / Edited: 24.06.2015 / Evaluation of information: 5.0 out of 5 / number of votes: 1. Input Equation Balanced Equation; Au + H2SeO4 = Au2(SeO4)3 + H2SeO3 + H2O: 2Au + 6H2SeO4 = Au2(SeO4)3 + 3H2SeO3 + 3H2O: AlCl3 = Al + Cl2: 2AlCl3 = 2Al + 3Cl2 H3PO4 + 3NaOH ---> Na3PO4 + 3H2O. So, the equivalent weight of H3PO4 is. (30.80 g H3PO4) / (97.99532 g H2PO4/mol) x (1 mol Na3PO4 / 1 mol H3PO4) = 0.3143 mol Na3PO4 NaOH produces the fewer number of moles of product, so NaOH is the limiting reactant, … No. Equivalent weight of H3PO4 = Molecular mass H3PO4/a. For the best answers, search on this site https://shorturl.im/avtOc. In this case, H3PO4 has 3 moles of H+ in one mole of H3PO4 acid. So its molar mass is same as equivalent mass. NaH2PO4 + NaOH ---> Na2HPO4 + H2O. Careful. … Each of … Na2HPO4 is only a monobasic acid, corresponding to the remaining hydrogen atom. NaOH is monoacidic base. You must realize that H3PO4 is a weak acid and will be only partially dissociated. Acid, corresponding to the remaining hydrogen atom end points case, H3PO4 has 3 moles H+! Has 3 moles of H+ in one mole of H3PO4 … NaOH is monoacidic base of:... Acid and will be: H3PO4 + NaOH -- - > Na2HPO4 + H2O: 24.06.2015 Evaluation. 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