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H3PO4 is a tribasic acid and one of it`s salt is NaH2PO4. What volume of 1M NaOH solution should be added to 12g of NaH2PO4 to convert it into Na3PO4?
Write first the chemicl eqn. ad then use mole – concept – 1NaH2PO4 + 2NaOH ------------> Na3PO4 + H2O12/120 = 0.1 molNaOH moles = 0.1*2 = 0.2 mol0.2 mol =1 * Vv = 0.2 lor 200 ml.
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