For the following Assertion and Reason, the correct option is Ass… - Vidyadip

MCQ

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 $Cu ^{2+}( aq )+ S ^{2-}( aq ) \rightleftharpoons \operatorname{CuS}( s )$ is high because the solubility product is low.

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

✓

Answer

Correct option: D.

Both $( A )$ and $( R )$ are true but $( R )$ is not the explanation for $(A)$

d
Slow or fast process is kinetic parameter but extent less or more is hermodynamic parameter.

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