Chapter 9, Problem 1STP

Interpretation Introduction

Interpretation:

The type of reaction needs to be identified.

$\text{Cs}\left(\text{s}\right){\text{+H}}_{\text{2}}\text{O}\left(\text{l}\right)\to \text{CsOH}\left(\text{aq}\right){\text{+H}}_{\text{2}}\left(\text{g}\right)$

Concept introduction:

Chemical reactions are mainly classified into four types. They are synthesis, combustion, decomposition and replacement reaction. Replacement reactions are classified into two types single and double-replacement reaction.

Answer to Problem 1STP

The reaction is single replacement reaction.

Explanation of Solution

Reason for correct option:

Single-replacement reaction is a type of reaction in which the atom of one element displace the atoms of another element in a compound. In this reaction, cesium atom replaces the gaseous hydrogen from the water molecule. Hence, the reaction is single replacement reaction.

Conclusion

Reason for incorrect option:

Synthetic reactions are those in which two or more reactants react to produce a single product. Therefore, the reaction is not a synthesis reaction.

In the combustion reaction, along with product light and energy is also released. Therefore, it is not a combustion reaction.

Decomposition is the reverse of synthesis reaction, in this reaction a single reactant is split into two or more product.