Chapter 11, Problem 51A

(a)

Interpretation Introduction

Interpretation:

The balanced chemical equation needs to be determined for the combination reaction of sodium oxide + water.

Concept Introduction :

A reaction in which a single product is formed when multiple reactants are combined is called a combination reaction.

Answer to Problem 51A

The balanced chemical equation is $\text{NaO}\left(\text{s}\right)+{\text{H}}_2\text{O}\left(\text{l}\right)\to 2\text{NaOH}\left(\text{aq}\right)$ .

Explanation of Solution

The coefficients are adjusted so that there are equal number of atoms of the same elements on the reactant and product side to form a single compound.

Hence, the balanced chemical equation is $\text{NaO}\left(\text{s}\right)+{\text{H}}_2\text{O}\left(\text{l}\right)\to 2\text{NaOH}\left(\text{aq}\right)$ .

(b)

Interpretation Introduction

Interpretation:

The balanced chemical equation needs to be determined for the combination reaction of hydrogen + bromine.

Concept Introduction :

A reaction in which a single product is formed when multiple reactants are combined is called a combination reaction.

Answer to Problem 51A

The balanced chemical equation is ${\text{H}}_2\left(\text{g}\right)+{\text{Br}}_{\text{2}}\left(\text{g}\right)\to 2\text{HBr}\left(\text{g}\right)$ .

Explanation of Solution

The coefficients are adjusted so that there are equal number of atoms of the same elements on the reactant and product side to form a single compound.

Hence, the balanced chemical equation is ${\text{H}}_2\left(\text{g}\right)+{\text{Br}}_{\text{2}}\left(\text{g}\right)\to 2\text{HBr}\left(\text{g}\right)$ .

(c)

Interpretation Introduction

Interpretation:

The balanced chemical equation needs to be determined for the combination reaction dichlorine heptoxide + water.

Concept Introduction :

A reaction in which a single product is formed when multiple reactants are combined is called a combination reaction.

Answer to Problem 51A

The balanced chemical equation is ${\text{Cl}}_{\text{2}}{\text{O}}_{\text{7}}\left(\text{l}\right){\text{+ H}}_{\text{2}}\text{O}\left(\text{l}\right)\to {\text{2HClO}}_{\text{4}}\left(\text{aq}\right)$ .

Explanation of Solution

The coefficients are adjusted so that there are equal number of atoms of the same elements on the reactant and product side to form a single compound.

Hence, the balanced chemical equation is ${\text{Cl}}_{\text{2}}{\text{O}}_{\text{7}}\left(\text{l}\right){\text{+ H}}_{\text{2}}\text{O}\left(\text{l}\right)\to {\text{2HClO}}_{\text{4}}\left(\text{aq}\right)$ .