D-And F-Block Elements Ques 35
Question: Acidified potassium dichromate on reacting with a sulphite is reduced to
Options:
A) $ CrO_2Cl_2 $
B) $ CrO_4^{2-} $
C) $ C{{r}^{3+}} $
D) $ C{{r}^{2+}} $
Show Answer
Answer:
Correct Answer: C
Solution:
$ Cr_2O_7^{2-}+8{{H}^{+}}+2SO_3^{2-},\to ,2C{{r}^{+3}}+3SO_4^{2-}+4H_2O $