Question

$pK_a$ value of phenol is $10.0$ while that of ethanol is $15.9$ Ethanol is stronger acid than phenol.

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both issertion and reason are true but reason is not the correct explanation of assertion
• C. If assertion is true but reason is false
• D. If both assertion and reason are false

Answer 1

Answer: (C)

If assertion is true but reason is false

Answer 2

Greater the $pK_a$ value, weaker is the acid. Hence, phenol is more acidic than ethanol.