The equivalent weight of phosphoric acid NaOH + H3PO4 (H3PO4) in the reaction NaH2PO4 + H2O is

Question

The equivalent weight of phosphoric acid (H₃PO₄) in the reaction

NaOH + H₃PO₄ → NaH₂PO₄ + H₂O is

(a) 25

(b) 49

(c) 59

(d) 98

Answer 1

Correct option is (d) 98

Since substances react in ratio of their g equivalents, 1 g eq wt. of NaOH reacts with 1 g eq. wt. of H₃PO₄. Therefore, eq. wt. of H₃PO₄ in this reaction is 98.