9701 MCQ Solution 39

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Question 39: [Physical > Equilibria]:
Which ions are present in a solution of ethanol in an excess of concentrated sulphuric acid?

1 CH3CH2O-
2 CH3CH2O+H2
3 HSO-4
Reference: Past Exam Paper – November 2002 Paper 1 Q39



Solution 39:
Answer: C.

In this solution the sulphuric acid is the stronger acid thus will donate protons (H+), and the organic alcohol will accept the protons raising a positive charge in it. 
Thus 1 is incorrect since the alcohol is gaining a negative charge but should gain a positive charge. 
Hence the only valid option is C.

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