Question

· H3,PO4, is a tribasic acid and one of its salt is
NaH2 PO4, What volume of 1M NaOH solution should
be added to 12 g NaH2,PO4, to convert it into
Na3,PO4,? (at.wt of P=31)
(1) 100 mL
(2) 200 ml
(3) 80 mL
(4) 300 mL​

Answer 1

Answer:

answer

Explanation:

​Thus according to this reaction 1 mol of NaH2PO4 react with 2 mol of NaOH. Thus 0.2 mol NaOH is required for complete reaction. Therefore 200 mL of 1 M NaOH should be added to 12 g NaH2PO4 to exactly convert it into Na3PO4.