${\mathrm{H}}_2{\mathrm{S}}_2{\mathrm{O}}_8+2{\mathrm{H}}_2\mathrm{O}\to 2{\mathrm{H}}_2{\mathrm{SO}}_4+X$ which of the following statement is incorrect for X?

When Peroxydisulfuric acid is treated with water,

${\mathrm{H}}_2{\mathrm{S}}_2{\mathrm{O}}_8+2{\mathrm{H}}_2\mathrm{O}\to 2{\mathrm{H}}_2{\mathrm{SO}}_4+{\mathrm{H}}_2{\mathrm{O}}_2$

So,

${ }^{\text{'}}{X}^{\mathrm{\prime }}$ is ${\mathrm{H}}_2{\mathrm{O}}_2$

The dihedral angle in H2O2 in the gaseous phase is 111.5°.and in the solid phase is  90.2° .

Dihedral angle: gas phase > solid phase.

Thus, the statement given in option A is incorrect.