Given below are two statements:
Assertion (A): When Cu (II) and sulphide ions are mixed, they react together extremely quickly to give a solid.
Reason (R): The equilibrium constant of Cu2+(aq) + S2- (aq) ⇋ CuS(s) is high because the solubility product is low.
 
1. Both (A) and (R) are True and (R) is the correct explanation of (A)
2. Both (A) and (R) are False.
3. (A) is True but (R) is False.
4. Both (A) and (R) are True but (R) is not the correct explanation of (A)
Subtopic:  Solubility Product |
Level 4: Below 35%
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