Which of the following aqueous solution remain alkaline after electrolysis? (a) \( \mathrm{NaCl}...

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Which of the following aqueous solution remain alkaline after electrolysis?
(a) \( \mathrm{NaCl} \)
(b) \( \mathrm{CuCl}_{2} \)
(c) \( \mathrm{CH}_{3} \mathrm{COONa} \)
(d) \( \mathrm{K}_{2} \mathrm{SO}_{4} \)
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