In which of the following equilibrium reactions, the equilibrium would shift to right side. If the total pressure is decreased:

The oxidation of ${\mathrm{SO}}_2$ by ${\mathrm{O}}_2$ to ${\mathrm{SO}}_3,$ is an exothermic reaction. The yield of ${\mathrm{SO}}_3$ will be maximum if

For manufacturing ammonia by the reaction

${\mathrm{N}}_2+3{\mathrm{H}}_2\rightleftharpoons 2{\mathrm{NH}}_3+2 \mathrm{kcal}$, the favourable conditions are:

Does Le Chatelier's principle predict a change of equilibrium concentration for the following reaction if the gas mixture is compressed:

${\mathrm{N}}_2{\mathrm{O}}_{4\left(\mathrm{g}\right)}\rightleftharpoons 2{\mathrm{NO}}_{2\left(g\right)}$

$\mathrm{aA}\rightleftharpoons \mathrm{bB}+\mathrm{cC},\Delta \mathrm{H}=-\mathrm{x} \mathrm{kCal}$

If high pressure and low temperature are the favourable conditions for the formation of the product in the above reaction, then: