According to Le Chatelier's principle,adding heat to a solid and liquid in equilibrium with an endothermic nature will cause the:

In the melting of ice,which one of the conditions will be more favourable?

For the reaction $PCl_{5(g)} \rightleftharpoons PCl_{3(g)} + Cl_{2(g)}$,the forward reaction is favored at constant temperature by: $(1)$ Adding an inert gas at constant volume $(2)$ Adding $Cl_{2(g)}$ at constant volume $(3)$ Adding an inert gas at constant pressure $(4)$ Increasing the volume of the container $(5)$ Adding $PCl_{5(g)}$ at constant volume

The equilibrium $2 Cu^{+} \rightleftharpoons Cu + Cu^{2+}$ in aqueous medium at $25^{\circ} C$ shifts towards the left in the presence of
$(A)$ $NO_3^{-}$ $(B)$ $Cl^{-}$ $(C)$ $SCN^{-}$ $(D)$ $CN^{-}$

The equilibrium $SO_2Cl_{2(g)} \rightleftharpoons SO_{2(g)} + Cl_{2(g)}$ is attained at $25 ^\circ C$ in a closed container and an inert gas helium is introduced. Which of the following statements is correct?

The rate of reaction of which of the following is not affected by pressure?