SATHEE: Redox Reactions And Electrochemistry Ques 445

Redox Reactions And Electrochemistry Ques 445

Question: The oxidation state of $C r$ in $C r_{2} O_{7}^{2 -}$ is [BHU 2000; CPMT 2000]

Options:

A) 4

B) - 6

C) 6

D) - 2

Show Answer

Answer:

Correct Answer: C

Solution:

$\overset{*,}{C r_{2} O_{7}^{2 -}},$ $2 x - 2 \times 7 = - 2$ ; $2 x = 14 - 2 = 12$ $x = \frac{12}{2} = + 6$ .

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Redox Reactions And Electrochemistry Ques 445

Question: The oxidation state of Cr in Cr2O72− is [BHU 2000; CPMT 2000]

Options:

Answer:

Solution:

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Question: The oxidation state of $C r$ in $C r_{2} O_{7}^{2 -}$ is [BHU 2000; CPMT 2000]