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Coordination Compounds — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryCoordination Compounds1 Mark
MCQ
Copper sulphate dissolves in ammonia due to the formation of:
  • A
    $ \mathrm{Cu}_2 \mathrm{O} $
  • ✓
    $ {\left[\mathrm{Cu}\left(\mathrm{NH}_3\right)_4\right] \mathrm{SO}_4} $
  • C
    $ {\left[\mathrm{Cu}\left(\mathrm{NH}_3\right)_4\right] \mathrm{OH}} $
  • D
    $ {\left[\mathrm{Cu}\left(\mathrm{H}_2 \mathrm{O}\right)_4\right] \mathrm{SO}_4}$
✓

Answer

Correct option: B.
$ {\left[\mathrm{Cu}\left(\mathrm{NH}_3\right)_4\right] \mathrm{SO}_4} $
Copper sulphate dissolves in ammonia due to the formation of $\left[\mathrm{Cu}\left(\mathrm{NH}_3\right)_4\right] \mathrm{SO}_4.$
$\mathrm{CuSO}_4+4 \mathrm{NH}_3 \rightarrow\left[\mathrm{Cu}\left(\mathrm{NH}_3\right)_4\right] \mathrm{SO}_4$
$\left[\mathrm{Cu}\left(\mathrm{NH}_3\right)_4\right] \mathrm{SO}_4$ contains complex cation $\left[\mathrm{Cu}\left(\mathrm{NH}_3\right)_4\right]^{2+}$.

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