(a)[2]
The chemical equation represents a reaction that makes sodium hydroxide. $\text{Na}_2\text{CO}_3 + \text{Ca(OH)}_2 \rightarrow 2\text{NaOH} + \text{CaCO}_3$ Complete the word equation for this reaction.
(b)[3]
Complete the table to give the expected observations.
(c)[3]
Explain these observations in terms of the kinetic particle model.
(d(i))[1]
Suggest why a catalyst is employed.
(d(ii))[1]
State one other process that releases oxides of nitrogen into the atmosphere.
(d(iii))[1]
State one harmful effect of oxides of nitrogen on health.
(e)[1]
Which one of these compounds is also found in many fertilisers? Tick one box. barium hydroxide potassium phosphate sodium chloride tin(II) sulfate
(f)[1]
What is the name for a reaction in which the temperature of the solution decreases?