InterviewSolution
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InterviewSolution
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Consider the chemical reaction: `underset(("Green solution"))(Ni^(2+)(aq))+6NH_(3)(aq) hArr underset(("Blue solution"))([Ni(NH_(3))_(6)]^(2+)) (aq)` When `H^(o+)(aq)` is added, the colour green is favoured. Use one or more of the following interpretations to answer the questions: i. Some unreacted `Ni^(2+)(aq)` is present in the solution at equilibrium ii. Some unreacted `NH_(3)(aq)` is present in the solution at equilibrium iii. The colour change indicates new equilibrium conditions with reduced `[Ni(NH_(3))_(6)]^(2+)(aq)` iv. The colour change indicates new equilibrium conditions with increased `[Ni(NH_(3))_(6)]^(2+)(aq)`. The deepening of blue colour on addition of more `NH_(3)(aq)` supports interpretation(s).A. i onlyB. i and iv onlyC. i and ii onlyD. ii and iv only |
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Answer» Correct Answer - D Addition of `NH_(3)` causing more blue colour means reaction moving in the forward direction. `rArr [Ni(NH_(3))_(6)]^(2+)` has increased and `Ni^(2+)` (unreacted) was present initially. |
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