Chapter 9, Problem 118A

Apply Describe the reaction of aqueous solutions of sodium sulfide and copper(ll) sulfate, producing the precipitate copper(ll) sulfide.

Interpretation Introduction

Interpretation:

The reaction of aqueous solutions of sodium sulfide and copper (II) sulfate, producing copper (II) sulfide as precipitate needs to be determined.

Concept introduction:

An aqueous solution is defined as the solution in which water is the solvent.

Answer to Problem 118A

The balanced reaction of aqueous solutions of sodium sulfide and copper (II) sulfate, producing copper (II) sulfide as precipitate is,

${\text{Na}}_{\text{2}}\text{S}\left(\text{aq}\right){\text{+CuSO}}_{\text{4}}\left(\text{aq}\right)\to \text{CuS}\left(\text{s}\right)\text{+}{\text{Na}}_{\text{2}}{\text{SO}}_{\text{4}}\left(\text{aq}\right)$

Explanation of Solution

The skeletal reaction of aqueous solutions of sodium sulfide and copper (II) sulfate, producing copper (II) sulfide as precipitate is,

${\text{Na}}_{\text{2}}\text{S}\left(\text{aq}\right){\text{+CuSO}}_{\text{4}}\left(\text{aq}\right)\to \text{CuS}\left(\text{s}\right)\text{+}{\text{Na}}_{\text{2}}{\text{SO}}_{\text{4}}\left(\text{aq}\right)$

All the coefficients are 1 hence, the reaction is already balanced.

Therefore, the balanced reaction is,

${\text{Na}}_{\text{2}}\text{S}\left(\text{aq}\right){\text{+CuSO}}_{\text{4}}\left(\text{aq}\right)\to \text{CuS}\left(\text{s}\right)\text{+}{\text{Na}}_{\text{2}}{\text{SO}}_{\text{4}}\left(\text{aq}\right)$

Conclusion

Therefore, the balanced reaction is,

${\text{Na}}_{\text{2}}\text{S}\left(\text{aq}\right){\text{+CuSO}}_{\text{4}}\left(\text{aq}\right)\to \text{CuS}\left(\text{s}\right)\text{+}{\text{Na}}_{\text{2}}{\text{SO}}_{\text{4}}\left(\text{aq}\right)$