When so2 is passed through acidic solution of potassium chromate ,then chromium sulphate is formed Change valency of chromium - Chemistry -

Question

When so2 is passed through acidic solution of potassium
chromate ,then chromium sulphate is formed Change valency of
chromium is

Q When S O 2 is passed through acidic solution of potassium
chromate , then chromium sulphate is formed Change valency of
chromium is ?

Anjali Yadav · Answer

Reaction of sulphur dioxide with K2Cr2O7?in acidic medium is given
as
3?SO2?+ Cr2O72-?+?2?H+??3 SO42-?+?2?Cr3+?+ H2O

Oxidation state of Sulphur in SO2?is?+4?which changes to?+6?in
SO42-?

When so2 is passed through acidic solution of potassium chromate ,then chromium sulphate is formed. Change valency of chromium is Q. When S O 2 is passed through acidic solution of potassium chromate , then chromium sulphate is formed. Change valency of chromium is ?