Chapter 15, Problem 3PE

(a)

Interpretation Introduction

Interpretation:

The indicated equation has to be completed and balanced.

  $\text{Zn}\left(s\right)+\text{HCl}\left(aq\right)\to$

Concept Introduction:

Metals on treatment with acids form salt and release dihydrogen gas. The later gas can be detected by characteristic pop sound. The general reaction is illustrated as follows:

  $\text{M}\left(s\right)+\text{HCl}\left(aq\right)\to \text{MCl}\left(aq\right)+{\text{H}}_{\text{2}}\left(g\right)$

Here,

$\text{M}$ denotes metal.

$\text{MCl}$ denotes metal chloride salt.

(b)

Interpretation Introduction

Interpretation:

The indicated equation has to be completed and balanced.

  $\text{Al}{\left(\text{OH}\right)}_{\text{3}}\left(s\right)+{\text{H}}_2{\text{SO}}_{\text{4}}\left(aq\right)\to$

Concept Introduction:

Neutralization reaction involves concentration of an acid and base that generates a salt from the cation and anion substrates along with removal of water. For instance reaction amongst $\text{NaOH}$ and $\text{HCl}$ is as follows:

  $\text{NaOH}+\text{HCl}\to \text{NaCl}+{\text{H}}_2\text{O}$

Metal hydroxide is basic and thus on treatment with acids such as $\text{HCl}$, sulfuric or nitric acid from corresponding salts by neutralization along with release of water.

(c)

Interpretation Introduction

Interpretation:

The indicated equation has to be completed and balanced.

  $\text{Ca}{\left({\text{HCO}}_3\right)}_2\left(s\right)+\text{HBr}\left(aq\right)\to$

Concept Introduction:

Metal hydrogen carbonate on treatment with acids such as hydrobromic or hydrochloric acid form salts along with releases of water molecule and evolution of ${\text{CO}}_{\text{2}}$. A general reaction scheme is given as follows:

  $\text{M}\left({\text{HCO}}_3\right)+\text{HBr}\to \text{MBr}+{\text{CO}}_{\text{2}}+{\text{H}}_{\text{2}}\text{O}$

(d)

Interpretation Introduction

Interpretation:

The indicated equation has to be completed and balanced.

  $\text{KOH}\left(s\right)+{\text{H}}_3{\text{PO}}_{\text{4}}\left(aq\right)\to$

Concept Introduction:

Refer to part (b).