Question

Question #a3830

Answer 1

Equation of the Reaction

`Li_2S+Co(NO_3)_2->CoS+2LiNO_3`

This equation reveals that 1 mol `Li_2S` is required to react completely with 1 mol `Co(NO_3)_2`

Let V L be the volume of0.160 M `Li_2S` solution required to react completely with 125ml or 0.125L 0.160M `Co(NO_3)_2` solution.

`Li_2S` contains `Vxx0.160 mol` solute

`Co(NO_3)_2` solution contains `0.125xx0.160mol` solute

`Vxx0.160=0.125xx0.160`

`:.V=0.125L=125 mL`