Redox Reactions And Electrochemistry Ques 703

Question: Which substance serves as reducing agent in the following reaction- $ 14{{H}^{+}}+Cr_2O_7^{2-}+3Ni\xrightarrow{{}} $ $ 2C{{r}^{3+}}+7H_2O+3N{{i}^{2+}} $

Options:

A) $ H_2O $

B) Ni

C) $ {{H}^{+}} $

D) $ Cr_2O_7^{2-} $

Show Answer

Answer:

Correct Answer: B

Solution:

[b] $ (Ni\to N{{i}^{2+}})Ni $ loses electrons hence act as reducing agent.



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