91Ó°ÊÓ

(a) Explain how face-sharing between \(\mathrm{M}_{6} \mathrm{O}\) octahedra leads to compounds with stoichiometries of \(\mathrm{M}_{9} \mathrm{O}_{2}\) for \(\mathrm{M}=\mathrm{Rb},\) and \(\mathrm{M}_{11} \mathrm{O}_{3}\) for \(\mathrm{M}=\mathrm{Cs}\) (b) The suboxide \(\mathrm{Cs}_{7} \mathrm{O}\) contains \(\mathrm{Cs}_{11} \mathrm{O}_{3}\) clusters. Explain how this arises.

Suggest products and write balanced equations for cach of the following reactions; these are not necessarily balanced on the left-hand side. (a) \(\mathrm{KOH}+\mathrm{H}_{2} \mathrm{SO}_{4} \rightarrow\) (b) \(\mathrm{NaOH}+\mathrm{SO}_{2} \rightarrow\) (c) \(\mathrm{KOH}+\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH} \rightarrow\) (d) \(\mathrm{Na}+\left(\mathrm{CH}_{3}\right)_{2} \mathrm{CHOH} \rightarrow\) (e) \(\mathrm{NaOH}+\mathrm{CO}_{2} \rightarrow\) (f) \(\mathrm{NaOH}+\mathrm{CO}^{450 \mathrm{K}}\) \((\mathrm{g}) \mathrm{H}_{2} \mathrm{C}_{2} \mathrm{O}_{4}+\mathrm{CsOH} \rightarrow\) (h) \(\mathrm{NaH}+\mathrm{BCl}_{3} \rightarrow\)

(a) Suggest products for the reaction of \(\mathrm{Li}_{3} \mathrm{N}\) with water. Write a balanced equation for the reaction. (b) \(\mathrm{A}\) compound \(\mathbf{A}\) was isolated from the reaction between a group 1 metal \(\mathrm{M}\) and \(\mathrm{O}_{2} .\) A reacts with water to give only MOH, while M reacts in a controlled manner with water giving \(\mathrm{MOH}\) and another product, B. Suggest identities for \(\mathrm{M}, \mathrm{A}\) and \(\mathrm{B}\). Write equations for the reactions described. Compare the reaction of \(\mathrm{M}\) with \(\mathrm{O}_{2}\) with those of the other group 1 metals with \(\mathrm{O}_{2}\)