Question:
Which of the following ions can be separated by aq. NH\(_4\)OH in presence of NH\(_4\)Cl?
Which of the following ions can be separated by aq. NH\(_4\)OH in presence of NH\(_4\)Cl?
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NH\(_4\)Cl suppresses ionization of NH\(_4\)OH, enabling selective precipitation.
Updated On: Mar 24, 2026
- Al\(^{3+}\) and Fe\(^{3+}\)
- Cr\(^{3+}\) and Al\(^{3+}\)
- Cu\(^{2+}\) and Al\(^{3+}\)
- None of these
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The Correct Option is C
Solution and Explanation
Step 1: In presence of NH\(_4\)Cl, NH\(_4\)OH acts as a weak base.
Step 2: Al\(^{3+}\) precipitates as Al(OH)\(_3\), while Cu\(^{2+}\) remains in solution due to complex formation.
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