Chemical Equilibrium
GCE Chemistry

a) State Le Chatelier's Principle. (2 marks) b) Consider the following equilibrium reaction: N2(g) + 3H2(g) ⇌ 2NH3(g) ΔH = -92 kJ/mol State and explain the effect of each of the following ch…

a) Distinguish between a reversible reaction and an irreversible reaction, giving one example of each. (4 marks) b) For the gaseous equilibrium: 2SO2(g) + O2(g) ⇌ 2SO3(g) ΔH = -196 kJ/mol i)…

The equilibrium constant expression for the reaction $2SO_2(g) + O_2(g) \rightleftharpoons 2SO_3(g)$ is

At a certain temperature, the equilibrium constant $K_c$ for the reaction $H_2(g) + I_2(g) \rightleftharpoons 2HI(g)$ is 49. If the equilibrium concentrations of $H_2$ and $I_2$ are both $0.10\,mol\,d…

Adding an inert gas at constant volume to an equilibrium mixture of gases will

Which of the following statements correctly describes a system at chemical equilibrium?

Consider the equilibrium: $CaCO_3(s) \rightleftharpoons CaO(s) + CO_2(g)$. The correct expression for the equilibrium constant $K_c$ is

At 500 K, the equilibrium constant $K_c$ for the reaction $A(g) + B(g) \rightleftharpoons C(g) + D(g)$ is 0.040. If the initial concentrations of A and B are each $1.0\,mol\,dm^{-3}$ and no C or D are…

For the reaction $PCl_5(g) \rightleftharpoons PCl_3(g) + Cl_2(g)$, if the value of $K_c$ at a given temperature is very large (e.g. $K_c \gg 1$), this indicates that at equilibrium

For the reaction: $N_2(g) + 3H_2(g) \rightleftharpoons 2NH_3(g)$, $\Delta H = -92\,kJ\,mol^{-1}$. Which condition would shift the equilibrium to the right to produce more ammonia?