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78. When SO2 is passed through acidified K2Cr2O7 solution, A. the solution turns blue B. the solution is decolourised C. SO2 is reduced D. green Cr2(SO4)3 is formed

78. When SO2 is passed through acidified K2Cr2O7 solution,
A. the solution turns blue
B. the solution is decolourised
C. SO2 is reduced
D. green Cr2(SO4)3 is formed

Grade:Upto college level

2 Answers

Arun Singh
11 Points
5 years ago
D. green Cr2(SO4)3 is formed When SO2 is bubbled through acidified solution of K2Cr2O7, the orange colour of K2Cr2O7 solution turns to clean green due to formation of chromium sulphate
Rithu
11 Points
4 years ago
K2cr2o7+so2->cr2(so4)3+kOrange colour potassium dichromate changes on addition with sulphur dioxide changes 2 green colour chromium sulphate and potassium.This is not balanced.hope u find it useful

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