AIIMS 2011 Chemistry Complex Ion Formation Assertion Reason Question
Assertion : AgCl is more soluble in NH₃ than in water. Reason : Ammonia is more polar than water.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false
Correct Answer
Detailed Explanation
The assertion states that AgCl is more soluble in NH₃ than in water, which is true. This is because ammonia can form a complex ion with silver ions (Ag⁺), leading to increased solubility. The reason given is that ammonia is more polar than water, which is incorrect. In fact, water is more polar than ammonia due to its higher dielectric constant and stronger hydrogen bonding capabilities. Therefore, while the assertion is true, the reason is false, making the correct answer C. Other options are incorrect because: A) suggests both are true and the reason explains the assertion, which is not the case; B) suggests both are true but the reason explains the assertion, which is also incorrect; D) suggests both are false, which is not true as the assertion is indeed true.
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