(a(i))[1]
State how the solubilities of group 2 hydroxides change.
(a(ii))[1]
State the observation in reaction 1.
(a(iii))[1]
Suggest a reactant in reaction 2.
(a(iv))[1]
Identify compound A.
(a(v))[1]
Ba(OH)$_2$ is formed when Ba reacts with water. Write the equation for this reaction.
(b(i))[1]
State which compound decomposes first on heating barytocalcite. Explain your answer.
(b(ii))[1]
Write the equation for the complete thermal decomposition of barytocalcite. Its formula is BaCa(CO$_3$)$_2$. BaCa(CO$_3$)$_2$ \rightarrow \_\_\_\_\_.
(c)[3]
Ba(OH)$_2$ is used to hydrolyse organic compounds. Fig. 2.2 shows B reacting with Ba(OH)$_2$, followed by acidification. Draw the structures of the organic products shown in Fig. 2.2.