Redox Reactions And Electrochemistry Ques 538
Question: The number of electrons involved in the reduction of $ Cr_2O_7^{2-} $ in acidic solution to $ C{{r}^{3+}} $ is [EAMCET 1983]
Options:
A) 0
B) 2
C) 3
D) 5
Show Answer
Answer:
Correct Answer: C
Solution:
$ Cr_2O_7^{2-}+3{{e}^{-}}\to C{{r}^{3+}} $ . In this reaction three electrons are required for the reduction of $ Cr_2O_7^{2-} $ into $ C{{r}^{3+}} $ .
