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Question : 153 of 160
Marks:
+1,
-0
Solution:
SO2 (Sulphur dioxide) reacts with potassium iodate to form sulphuric acid, potassium sulphate and iodine gas.
5SO2+2KIO3+4H2O→4H2SO4+K2SO4+I2
(ii)5SO2+2KMnO4+2H2O→K2SO4+2H2SO4+2MnSO4
SO2 decolourise
KMnO4 by converting it to
Mn2+ (iv)
SO2 reduces ferric salts into ferrous salt changing colour from yellow to light green.
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