MCQ practice · SSC Chemistry Board questions · Chapter 8: Chemistry and Energy
Which is a weak electrolyte?
Think it through first, then pick an option.
- a CH₃COOH
- b H₂SO₄
- c CuSO₄
- d NaCl
Answer and explanation
Correct answer: a CH₃COOH
Ethanoic acid ionises very little in solution, so it is a weak electrolyte.
Why the other options are wrong
- b H₂SO₄: H₂SO₄ ionises fully: a strong electrolyte.
- c CuSO₄: CuSO₄ ionises fully: a strong electrolyte.
- d NaCl: NaCl ionises fully: a strong electrolyte.
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