Question #a3830

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Answer 1 · 2016-10-03T13:05:04

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

$Vxx0.160=0.125xx0.160$

$:.V=0.125L=125 mL$