State how the solubilities of Group 2 hydroxides change as you go down the group.
Explain which factors cause this variation.
At $0^\circ\text{C}$, the solubility of $\text{Sr(OH)}_2$ is $3.37 \times 10^{-2}\ \text{mol dm}^{-3}$.
Write the solubility product expression for $\text{Sr(OH)}_2$.
Calculate the value of $K_{sp}$ at $0^\circ\text{C}$. Include units in your answer.
Write an equation for the thermal decomposition of strontium peroxide, $\text{SrO}_2$.
Suggest how the temperature at which thermal decomposition of $\text{MO}_2$ occurs changes down Group 2. Explain your answer.
Finish the equation for the thermal decomposition of barium ethanedioate. $ \text{BaC}_2\text{O}_4 \rightarrow \_\_\_\_\_\_\_\_ + \_\_\_\_\_\_\_\_ + \_\_\_\_\_\_\_\_ $
Describe two observations you would make when ethanedioic acid, $\text{H}_2\text{C}_2\text{O}_4$, is heated with acidified manganate(VII) ions.