Chapter 3, Problem 53QRT

(a)

Interpretation Introduction

Interpretation:

The given reaction ${\text{Zn (s) + 2NO}}_3^{-}{\text{(aq) + 4H}}^{\text{+}}\text{(aq) }\to {\text{Zn}}^{\text{2+}}{\text{(aq) + 2NO}}_{\text{2}}{\text{(g) + 2H}}_{\text{2}}\text{O(l)}$ is an acid- base reaction, oxidation – reduction reaction or precipitation reaction has to be identified.

Concept introduction:

Precipitation reaction: The formation of the product is insoluble when the ions combine in the solution is called precipitation reaction.

Acid - base reaction: Formation of the salt from the cation from the base and anion from the acid and formation of water is also the product.

Gas forming reaction: The reaction of acid and metal carbonates which produce carbonic acid. The carbonic acid decomposes which gives water and carbon dioxide.

Oxidation - reduction reaction: The electrons are transferred to one to other is called oxidation reduction reaction.

(b)

Interpretation Introduction

Interpretation:

The given reaction ${\text{Zn(OH)}}_{\text{2}}{\text{(s) + H}}_{\text{2}}{\text{SO}}_{\text{4}}\text{(aq)}\to {\text{ ZnSO}}_{\text{4}}{\text{(aq) + 2H}}_{\text{2}}\text{O(l)}$ is an acid- base reaction, oxidation – reduction reaction or precipitation reaction has to be identified.

Concept introduction:

Refer part (a)

(c)

Interpretation Introduction

Interpretation:

The given reaction ${\text{Ca(s) + 2 H}}_{\text{2}}\text{O(l) }\to {\text{ Ca(OH)}}_{\text{2}}{\text{(s) + H}}_{\text{2}}\text{(g)}$ is an acid- base reaction, oxidation – reduction reaction or precipitation reaction has to be identified.

Concept introduction:

Refer part (a)