Question

How and why does the density of liquid water change on prolonged electrolysis?
(A) Decreases, as the proportion of \(\mathrm{H}_{2} \mathrm{O}\) increases
(B) Remains unchanged
(C) Increases, as the proportion of \(\mathrm{D}_{2} \mathrm{O}\) increases
(D) Increases, as the volume decreases

Answer 1

Ans: (C)
 \(\mathrm{H}_{2} \mathrm{O}\) decomposes preferentially. Consequently \(\mathrm{D}_{2} \mathrm{O}\) concentration increases and density increases.

Answer 2

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Answer 3

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