QQuestion
What will be the colour of the solution formed when excess aqueous ammonia is added to aqueous copper sulphate solution?
(a) Yellow
(b) Orange
(c) Green
(d) Deep blue
WBBSEClass 10Physical ScienceInorganic Chemistry01 Mark2026 Easy
✓Answer
(d) Deep blue
Explanation
When excess aqueous ammonia (NH₄OH) is added to copper sulphate (CuSO₄) solution, a deep blue solution is formed due to the formation of the tetraammine copper(II) complex.
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