Chapter 14, Problem 14.93P

(a)

Interpretation Introduction

Interpretation:

The complete and balanced reaction of ${\text{Rb}}_{\left(\text{s}\right)}{\text{ with Br}}_{\text{2}\left(\text{l}\right)}$ has to be written.

Concept Introduction:

Balanced equation:

In a chemical equation, the number of atoms or elements that present in both reactant and product sides are equal means this equation is known as balanced equation.

Explanation of Solution

Reaction of ${\text{Rb}}_{\left(\text{s}\right)}{\text{ with Br}}_{\text{2}\left(\text{l}\right)}$ gives ${\text{RbBr}}_{\text{(s)}}$, equation for this reaction is,

  ${\text{Rb}}_{\left(\text{s}\right)}{\text{ + Br}}_{\text{2}\left(\text{l}\right)}\stackrel{}{\to }{\text{RbBr}}_{\text{(s)}}$

Add 2 as a coefficient in front of ${\text{Rb}}_{\left(\text{s}\right)}$ and ${\text{RbBr}}_{\text{(s)}}$ to get the balanced equation,

  ${\text{2Rb}}_{\left(\text{s}\right)}{\text{+ Br}}_{\text{2}\left(\text{l}\right)}\stackrel{}{\to }{\text{2RbBr}}_{\text{(s)}}$

(b)

Interpretation Introduction

Interpretation:

The complete and balanced reaction of ${\text{I}}_{\text{2(s)}}{\text{ with H}}_{\text{2}}{\text{O}}_{\text{(l)}}$ has to be written.

Concept Introduction:

Balanced equation:

In a chemical equation, the number of atoms or elements that present in both reactant and product sides are equal means this equation is known as balanced equation.

Explanation of Solution

Reaction of ${\text{I}}_{\text{2(s)}}{\text{ with H}}_{\text{2}}{\text{O}}_{\text{(l)}}$ gives ${\text{HI}}_{\text{(aq)}}{\text{ and HIO}}_{\text{(aq)}}$, the balanced equation for this reaction is,

  ${\text{I}}_{\text{2(s)}}{\text{+ H}}_{\text{2}}{\text{O}}_{\text{(l)}}\stackrel{}{\to }{\text{HI}}_{\text{(aq)}}{\text{+ HIO}}_{\text{(aq)}}$

(c)

Interpretation Introduction

Interpretation:

The complete and balanced reaction of ${\text{Br}}_{\text{2(l)}}{\text{ with I}}_{\text{(aq)}}^{-}$ has to be written.

Concept Introduction:

Balanced equation:

In a chemical equation, the number of atoms or elements that present in both reactant and product sides are equal means this equation is known as balanced equation.

Explanation of Solution

Reaction of ${\text{Br}}_{\text{2(l)}}{\text{ with I}}_{\text{(aq)}}^{-}$ gives ${\text{I}}_{\text{2(s)}}{\text{ and Br}}_{\text{(aq)}}^{\text{-}}$, the balanced equation for this reaction is,

  ${\text{Br}}_{\text{2(l)}}{\text{ + I}}_{\text{(aq)}}^{-}\stackrel{}{\to }{\text{I}}_{\text{2(s)}}{\text{ + Br}}_{\text{(aq)}}^{\text{-}}$

Add 2 as a coefficient in front of ${\text{I}}_{\text{(aq)}}^{-}$ and ${\text{Br}}_{\text{(aq)}}^{\text{-}}$ to get the balanced equation,

  ${\text{Br}}_{\text{2(l)}}{\text{ + 2I}}_{\text{(aq)}}^{-}\stackrel{}{\to }{\text{I}}_{\text{2(s)}}{\text{ + 2Br}}_{\text{(aq)}}^{\text{-}}$

(d)

Interpretation Introduction

Interpretation:

The complete and balanced reaction of ${\text{CaF}}_{\text{2(s)}}\text{with}{\text{H}}_{\text{2}}{\text{SO}}_{\text{4(l)}}$ has to be written.

Concept Introduction:

Balanced equation:

In a chemical equation, the number of atoms or elements that present in both reactant and product sides are equal means this equation is known as balanced equation.

Explanation of Solution

Reaction of ${\text{CaF}}_{\text{2(s)}}\text{with}{\text{H}}_{\text{2}}{\text{SO}}_{\text{4(l)}}$ gives ${\text{CaSO}}_{\text{4(s)}}{\text{ and HF}}_{\text{(g)}}$, the balanced equation for this reaction is,

  ${\text{CaF}}_{\text{2(s)}}{\text{+H}}_{\text{2}}{\text{SO}}_{\text{4(l)}}\stackrel{}{\to }{\text{CaSO}}_{\text{4(s)}}\text{+}{\text{HF}}_{\text{(g)}}$

Add 2 as a coefficient in front of ${\text{2HF}}_{\text{(g)}}$ to get the balanced equation,

  ${\text{CaF}}_{\text{2(s)}}{\text{+H}}_{\text{2}}{\text{SO}}_{\text{4(l)}}\stackrel{}{\to }{\text{CaSO}}_{\text{4(s)}}\text{+}{\text{2HF}}_{\text{(g)}}$