(B) The reaction for the hydrolysis of $H_4P_2O_5$ (pyrophosphorous acid) is:$H_4P_2O_5 + H_2O \longrightarrow 2H_3PO_3$In $H_3PO_3$ (phosphorous acid

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If product is an oxy acid with $-ous$ suffix.

(B) The reaction for the hydrolysis of $H_4P_2O_5$ (pyrophosphorous acid) is:$H_4P_2O_5 + H_2O \longrightarrow 2H_3PO_3$In $H_3PO_3$ (phosphorous acid),the oxidation state of $P$ is $+3$.Acids of phosphorus with oxidation state $+3$ are named with the $-ous$ suffix (e.g.,phosphorous acid).Therefore,the product is an oxy acid with an $-ous$ suffix.

Class 11 Chemistry p-Block Elements (Class 11)Boron family

Difficult

In the following reaction,assign the nature of the product formed by the complete hydrolysis of the underlined atom at $R.T.$:
$H_4\underline{P}_2O_5 + H_2O \longrightarrow \text{Products}$

A
If product is an oxy acid with $-ic$ suffix.
B
If product is an oxy acid with $-ous$ suffix.
C
If product consists of two oxy acids,one with $-ic$ suffix and the other with $-ous$ suffix.
D
If product is not an oxy acid,neither with $-ic$ suffix nor with $-ous$ suffix.