Consider the following reaction: $L i_{2} S (a q) + C o {(N O_{3})}_{2} (a q) \to 2 L i N O_{3} (a q) + C o S (s)$ $Li_2S(aq) + Co(NO_3)_2 (aq) -> 2LiNO_3(aq) + CoS(s)$ . What volume of $0.160$ $0.160$ $m o l \cdot L^{- 1}$ $molL^-1$ $L i_{2} S$ $Li_2S$ , solution is required to completely react with $0.130$ $0.130$ $m o l \cdot L^{- 1}$ $molL^-1$ $C o {(N O_{3})}_{2}$ $Co(NO_3)_2$ ?

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Consider the following reaction: $L i_{2} S (a q) + C o {(N O_{3})}_{2} (a q) \to 2 L i N O_{3} (a q) + C o S (s)$ $Li_2S(aq) + Co(NO_3)_2 (aq) -> 2LiNO_3(aq) + CoS(s)$ . What volume of $0.160$ $0.160$ $m o l \cdot L^{- 1}$ $molL^-1$ $L i_{2} S$ $Li_2S$ , solution is required to completely react with $0.130$ $0.130$ $m o l \cdot L^{- 1}$ $molL^-1$ $C o {(N O_{3})}_{2}$ $Co(NO_3)_2$ ?

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Answer 1 · 2018-05-06T07:25:05

Well the reaction relies on the brick-like solubility of transition-metal sulfides.

Explanation:

We gots...

$L i_{2} S (a q) + C o {(N O_{3})}_{2} (a q) \to C o S (s) ⏐ ↓ + 2 L i N O_{3} (a q)$ $Li_2S(aq) + Co(NO_3)_2(aq) rarr CoS(s)darr + 2LiNO_3(aq)$ ..

Else we could write the net ionic equation:

$C o^{2 +} + S^{2 -} \to C o S (s) ⏐ ↓$ $Co^(2+) + S^(2-) rarr CoS(s)darr$

And so we gots with respect to $C o^{2 +}$ $Co^(2+)$ $0.130 \cdot m o l \cdot L^{- 1}$ $0.130*mol*L^-1$ ...

$0.130 \cdot m o l \cdot L^{- 1} \times 100 \cdot m L \times 10^{- 3} \cdot L \cdot m L^{- 1} = 0.0130 \cdot m o l$ $0.130*mol*L^-1xx100*mLxx10^-3*L*mL^-1=0.0130*mol$ ...the volume of the cobalt ion solution was interpolated.

And given the 1:1 stoichiometry....we take the quotient...

$\frac{0.0130 \cdot m o l}{0.160 \cdot m o l \cdot L^{- 1}} \times 1000 \cdot m L \cdot L^{- 1} = 81.3 \cdot m L$ $(0.0130*mol)/(0.160*mol*L^-1)xx1000*mL*L^-1=81.3*mL$ of the lithium sulfide solution. Ad please note that I had to interpolate the concentration of lithium sulfide.

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Consider the following reaction: Li2S(aq)+Co(NO3)2(aq)→2LiNO3(aq)+CoS(s)Li_2S(aq) + Co(NO_3)_2 (aq) -> 2LiNO_3(aq) + CoS(s). What volume of 0.1600.160 mol⋅L−1mol*L^-1 Li2SLi_2S, solution is required to completely react with 0.1300.130 mol⋅L−1mol*L^-1 Co(NO3)2Co(NO_3)_2?

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