Question

The correct order of decreasing acidic strength of oxyacids of group 15?

Answer 1

3The solution is as follows:

1. The decreasing order of acidic strength of oxoacids of group 15 is HNO_​3>H₃PO₄>H₃AsO₄>H₃SbO₄>H₃BiO₄.

2. This is because:

-As we go down the group, due to inert pair effect, +5 oxidation state becomes less stable and higher oxidation states corresponds to acidic charater.
- As we go down the group, the metallic character increases and metals are basic in nature.