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CGP EDU Academic Team
Published on: August 14, 2026
A red solid is insoluble in water. However it becomes soluble if some K Ι is added to water. Heating the red solid in a test tube results in liberation of some violet coloured fumes and droplets of a metal appear on the cooler parts of the test tube. The red solid is :
Text Solution
Verified by ExpertsThe correct answer is:
B
HgI 2 ↓ + 2I – — → [HgI 4 ] 2– (colourless soluble complex)
HgI 2 
Hg + I 2 (violet colour)
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