(a)[2]
Describe what is meant by dynamic equilibrium.
(b)[2]
The pressure of the equilibrium mixture is raised. The temperature of the equilibrium mixture is kept constant. Predict and explain what will happen, if anything, to the composition of the equilibrium mixture.
(c(i))[1]
The temperature of the equilibrium mixture is raised. The pressure of the equilibrium mixture is kept constant. Suggest why the equilibrium position moves to the right.
(c(ii))[2]
Explain why the reaction rate increases.
(d)[2]
Draw the ‘dot-and-cross’ diagram for a molecule of $\text{PCl}_3$. Include only the outer shell electrons.
(e)[1]
$\text{PCl}_5$ reacts with water to produce hydrogen chloride and phosphoric acid, $\text{H}_3\text{PO}_4$. Construct an equation for this reaction.