Chapter 22, Problem 22.72SP

Interpretation Introduction

(a)

Interpretation:

The equation ${\text{Cs}}_{\text{(s)}}{\text{+H}}_{\text{2}}{\text{O}}_{\text{(l)}}\to ?$ is to be completed.

Concept introduction:

Addition of an alkali metal to water forms a basic solution. They react with water rapidly. Among these metals, Cesium reacts with water explosively. The reaction forms the monovalent ion of the metal and hydroxide ions.

Interpretation Introduction

(b)

Interpretation:

The equation ${\text{Rb}}_{\text{(s)}}{\text{+O}}_{\text{2}}{}_{\text{(g)}}\to ?$ is to be completed.

Concept introduction:

Alkali metals react with oxygen gas rapidly. However, different chemical elements give different products. For example, Lithium gives Lithium oxide but Potassium, Rubidium and Cesium gives the superoxide.