Chapter 15.3, Problem 15.27QAP

Interpretation Introduction

(a)

Interpretation:

According to the activity series tell the given reaction is spontaneous or not should be determined.

  ${\text{2Au(s)+6H}}^{\text{+}}\text{(aq)}\to {\text{2Au}}^{\text{3+}}{\text{(aq)+3H}}_{\text{2}}\text{(g)}$

Concept Introduction:

The activity series compares the reactivity of different metals depending on their positions in the series. The metal placed above in the activity series is more reactive than the metal placed below it. The metal at the top can replace the metal at the bottom from its aqueous solution.

According to the activity series, if a metal is combined to the reverse of the half reaction of any atom with its reactivity less than that of its own or it is placed below the metal in the activity series thus, the metal will oxidize spontaneously.

Interpretation Introduction

(b)

Interpretation:

According to the activity series tell the given reaction is spontaneous or not should be determined.

  ${\text{Ni}}^{\text{2+}}\text{(aq)+Fe(s)}\to {\text{Ni(s)+Fe}}^{\text{2+}}\text{(aq)}$

Concept Introduction:

The activity series compares the reactivity of different metals depending on their positions in the series. The metal placed above in the activity series is more reactive than the metal placed below it. The metal at the top can replace the metal at the bottom from its aqueous solution.

According to the activity series, if a metal is combined to the reverse of the half reaction of any atom with its reactivity less than that of its own or it is placed below the metal in the activity series thus, the metal will oxidize spontaneously.

Interpretation Introduction

(c)

Interpretation:

According to the activity series tell the given reaction is spontaneous or not should be determined.

  ${\text{2Ag(s)+Cu}}^{\text{2+}}\text{(aq)}\to {\text{2Ag}}^{\text{+}}\text{(aq)+Cu(s)}$

Concept Introduction:

The activity series compares the reactivity of different metals depending on their positions in the series. The metal placed above in the activity series is more reactive than the metal placed below it. The metal at the top can replace the metal at the bottom from its aqueous solution.

According to the activity series, if a metal is combined to the reverse of the half reaction of any atom with its reactivity less than that of its own or it is placed below the metal in the activity series thus, the metal will oxidize spontaneously.