WBJEE · Chemistry · d and f Block Elements
What will be the change in acidity if
(i) \(\mathrm{CuSO}_4\) is added in saturated \(\left(\mathrm{NH}_4\right)_2 \mathrm{SO}_4\) solution
(ii) \(\mathrm{SbF}_5\) is added in anhydrous HF
- A increase, increase
- B decrease, decrease
- C increase, decrease
- D decrease, increase
Answer & Solution
Correct Answer
(A) increase, increase
Step-by-step Solution
Detailed explanation
Hint : i) \(\mathrm{Cu}^{2+}{ }_{(\mathrm{aq})}+4 \mathrm{NH}_4{ }^{+}{ }_{(\mathrm{aq})} \rightarrow\left[\mathrm{Cu}\left(\mathrm{NH}_3\right)_4\right]^{+2}+4 \mathrm{H}^{+}{ }_{(\mathrm{aq})}\) Formation of stable \(\left[\mathrm{Cu}\left(\mathrm{NH}_3\right)_4\right]^{+2}\)…
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