Question

Find the equivalent mass of H3PO4 in the following
reaction :
Ca(OH)2 + H3PO4 -> CaHPO4 + 2H20
[Hint : Only two hydrogen atoms of H3PO4 are
replaced.]​

Answer 1

Answer: The equivalent mass of for the given reaction is 49 g eq.

Explanation:

is an acid and the equivalent mass of an acid is calculated by using the formula:

Molar mass of

From the given reaction:

As, the replaceable hydrogen ions in acid is 2, by putting the values in above equation, we get:

Equivalent mass of

Hence, The equivalent mass of for the given reaction is 49 g eq.