Chemistry
Assertion (A): Aqueous solution of potassium chloride can conduct electricity.
Reason (B): Conduction of electric current is due to the presence of free ions.
- (A) is true and (R) is false.
- (A) is false and (R) is true.
- Both (A) and (R) are true and (R) is the correct explanation of (A).
- Both (A) and (R) are true, but (R) is not the correct explanation of (A).
Answer
Both (A) and (R) are true and (R) is the correct explanation of (A).
Reason — KCl is an ionic compound. In water, it dissociates completely into K+ and Cl- ions. These free moving ions carry electric current. Hence, the assertion (A) is true. The principle behind electrolytic conduction in solutions is the presence of free ions. Aqueous solution of KCl conduct electricity due to the presence of free ions. Hence, the reason (R) is true and it correctly explains assertion (A).
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