For the following Assertion and Reason, the correct option is Assertion (A) : When Cu (II) and sulphide ions are mixed, they react together extremely quickly to give a solid. Reason (R) : The equilibr

Question

For the following Assertion and Reason, the correct option is 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.

(A) (A) is false and (R) is true.
(B) Both (A) and (R) are false.
(C) Both (A) and (R) are true but (R) is not the explanation for (A).
(D) Both (A) and (R) are true and (R) is the explanation for (A).

Prashant Kotian · Accepted Answer

Correct answer: C. ubility product is low. (1) (A) is false and (R) is true. (2) Both (A) and (R) are false. (3) Both (A) and (R) are true but (R) is not the explanation for (A). (4) Both (A) and (R) are true and (R) is the explanation for (A). Ans. (3) | JEE MAIN-2020 | DATE : 02-09-2020 (SHIFT-1) | PAPER-1 | OFFICIAL PAPER | CHEMISTRY PAGE # 2 Sol. Rate of chemical reaction has nothing to do with value of equilibrium constant.

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