An industrial fuel, 'water gas', which consists of a mixture of ${\mathrm{H}}_2$ and CO can be made by passing team over red-hot carbon. The reaction is :

$\mathrm{C}\left(\mathrm{s}\right)+{\mathrm{H}}_2\mathrm{O}\left(\mathrm{g}\right)\rightleftharpoons \mathrm{CO}\left(\mathrm{g}\right)+{\mathrm{H}}_2\left(\mathrm{g}\right),\mathrm{\Delta H}=+131\mathrm{kJ}$

The yield of CO and ${\mathrm{H}}_2$ at equilibrium would be shifted to the product side by :