The equivalent mass of salt, `KHC_(2)O_(4) .H_(2)C_(2)O_(4) .4H_(2)O` when it act as reducing agent is:

H_(2)O_(2) cannot act as

The equivalent mass of K_(2)Cr_(2)O_(7) when it acts as oxidising agent in acidic medium, is equal to

In C+H_(2)OtoCO+H_(2),H_(2)O acts as

C_(4)H_(4)O_(4) can be

In the disproportionation reaction, 3HClO_(3) to HClO_(4)+Cl_(2)+2O_(2)+2H_(2)O , the equivalent mass of the oxidising agent is (molar mass of HClO_(3)= 84.45)

PbS+4H_(2)O_(2)rarrPbSO_(4)+4H_(2)O . In this reaction PbS undergoes

H_(2)O_(2) reduces