WBJEE · Chemistry · Hydrogen
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 & Solution
Correct Answer
(C) Increases, as the proportion of \(\mathrm{D}_{2} \mathrm{O}\) increases
Step-by-step Solution
Detailed explanation
Hint: \(\mathrm{H}_{2} \mathrm{O}\) decomposes preferentially. Consequently \(\mathrm{D}_{2} \mathrm{O}\) concentration increases and density increases.
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