(a)[1]
Suggest one further physical property of hydrogen fluoride.
(b(i))[1]
Write an equation showing how hydrogen fluoride dissociates.
(b(ii))[1]
Explain why the dissociation of hydrogen fluoride in water results in an acidic solution.
(c)[3]
What is the minimum volume, in $\text{cm}^3$, of $0.150\,\text{mol dm}^{-3}$ $\text{Ca(OH)}_2$ needed to react fully with a solution containing $0.200\,\text{g}$ of HF?
(d(i))[2]
Predict two physical properties shown by magnesium fluoride.
(d(ii))[2]
Explain, in terms of electrons, how a magnesium atom reacts with a fluorine molecule, $\text{F}_2$, to form a magnesium ion and two fluoride ions.