Redox Reactions And Electrochemistry Ques 672

Question: When SO2 is passed through acidified solution of potassium dichromate, then chromium sulphate is formed. The change in valency of chromium is

Options:

A) + 4 to + 2

B) + 5 to + 3

C) + 6 to + 3

D) + 7 to + 2

Show Answer

Answer:

Correct Answer: C

Solution:

[c] K2Cr2O7+3SO2+4H2SO4 K2SO4+Cr2(SO4)3+3SO3+4H2O O.N. of chrominum changes from +6 to +3



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