Redox Reactions And Electrochemistry Ques 526
Question: Which substance is serving as a reducing agent in the following reaction $ 14{{H}^{+}}+Cr_2O_7^{2-}+3Ni\to 2C{{r}^{3+}}+7H_2O+3N{{i}^{2+}} $ [CBSE PMT 1994; AFMC 2000; DPMT 2001]
Options:
A) $ H_2O $
B) $ Ni $
C) $ {{H}^{+}} $
D) $ Cr_2O_7^{2-} $
Show Answer
Answer:
Correct Answer: B
Solution:
The oxidation number of Ni changes from 0 to $ +1 $
