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Question

Which one is a weak acid?

A
0.1 M HCl
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B
0.1 M NaCl
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C
0.1 M CH3COOH
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D
0.1 M CH3OH
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E
0.1 M KOH
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Solution

The correct option is B 0.1 M CH3COOH
0.1 M CH3COOH (acetic acid solution) is a weak acid.
0.1 M NaCl is a neutral salt solution.
0.1 M CH3OH (methanol) is neutral. Alcohols are neutral in aqueous solution.
0.1 M KOH (potassium hydroxide) is a strongly basic solution.

So, option C is correct.

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