For the reaction, ${\mathrm{H}}_2\left(\mathrm{g}\right)+{\mathrm{I}}_2\left(\mathrm{g}\right)\underset{ }{\rightleftharpoons }2\mathrm{HI}\left(\mathrm{g}\right); {\mathrm{K}}_{\mathrm{C}}=57.0$ at 700 K. The molar concentration of ${\left[{\mathrm{H}}_2\right]}_{\mathrm{t}}=0.10 \mathrm{M},$ ${\left[{\mathrm{I}}_2\right]}_t$ = 0.20 M and ${\left[{\mathrm{H}}_2\right]}_{\mathrm{t}}=0.40 \mathrm{M}$ at any time ‘t’. The concentration quotient or reaction quotient Q for the reaction is