${\mathrm{Cr}}_2{\mathrm{O}}_7^{-2}\left(\mathrm{orange}\right)\stackrel{{\mathrm{P}}^{\mathrm{H}}=\mathrm{x}}{\rightleftharpoons }{\mathrm{CrO}}_4^{-2}\left(\mathrm{yellow}\right)$ . Equilibrium is attained at a ${\mathrm{p}}^{\mathrm{H}}=\mathrm{x}$then the incorrect statement regarding the process is

${\mathrm{p}}^{\mathrm{H}} = \mathrm{x}$, dynamic equilibrium exists

In acidic medium,${\mathrm{CrO}}_4^{-2}$  changes to ${\mathrm{Cr}}_2{\mathrm{O}}_7^{-2}$

In basic medium, ${\mathrm{Cr}}_2{\mathrm{O}}_7^{-2}$ changes to ${\mathrm{CrO}}_4^{-2}$

$\therefore {\text{\hspace{0.17em}p}}^{\mathrm{H}}>\mathrm{x}...........$basic medium – yellow ${\mathrm{CrO}}_4^{-2}$  but not orange ${\mathrm{Cr}}_2{\mathrm{O}}_7^{-2}$