Question

Assertion (A) Common ion effect is defined as a shift in equilibrium on adding a substance that provides more of an ionic species already present in the dissociation equilibrium.
Reason (R) Common ion effect is a phenomenon based on the Le-Chatelier's principle.

• A. Both $A$ and $R$ are correct; $R$ is the correct explanation of $A$
• B. Both $A$ and $R$ are correct; $R$ is not the correct explanation of $A$
• C. $A$ is correct; $R$ is incorrect
• D. $A$ is incorrect; $R$ is correct

Answer 1

Answer: (A)

The given defination is of common ion effect and it is a phenomenon based on Le-Chatelier's principle.
Both $A$ and $R$ are correct and $R$ is the correct explanation of $A$.