1. Tardigrade
  2. Question
  3. Chemistry
  4. The equivalent weight of phosphoric acid ( H 3 PO 4) in the reaction, NaOH + H 3 PO 4 longrightarrow NaH 2 PO 4+ H 2 O , is

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. The equivalent weight of phosphoric acid $\left( H _{3} PO _{4}\right)$ in the reaction,
$NaOH + H _{3} PO _{4} \longrightarrow NaH _{2} PO _{4}+ H _{2} O $, is

Some Basic Concepts of Chemistry

Solution:

image

Here $1$ mole of $NaOH$ reacts with $1$ mole of $H _{3} PO _{4}$. Since substances react in the ratio of their gram equivalents; thus, $1 \,g$ equivalent weight of $NaOH$ reacts with $1\, g$ equivalent weight of $H _{3} PO _{4}$. Therefore, equivalent weight of $H _{3} PO _{4}$ in this reaction is $98$.