# Problem: Consider the reaction below:CaS (aq) + MgSO4 (aq) ↔ CaSO4 (s) + MgS (aq)If K is 20 and the initial concentrations of CaS, MgSO4 and MgS are 0.5 M, 0.6 M and 0 M respectively, what is the equilibrium concentration of MgSO4?1. 0.1 M2. 0.4 M3. 0.2 M4. 0 M

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Consider the reaction below:

CaS (aq) + MgSO(aq) ↔ CaSO(s) + MgS (aq)

If K is 20 and the initial concentrations of CaS, MgSO4 and MgS are 0.5 M, 0.6 M and 0 M respectively, what is the equilibrium concentration of MgSO4?

1. 0.1 M

2. 0.4 M

3. 0.2 M

4. 0 M

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