Redox Reactions And Electrochemistry Ques 353

Question: In the following reaction, 2I+Cr2O27+14H+I2+2Cl3++7H2O Unbalanced parts are

Options:

A) H+,,H2O

B) Cr2O27,Cr3+

C) I,I2

D) None of them are balanced

Show Answer

Answer:

Correct Answer: C

Solution:

[c] (I) Cr2O72+6e2Cr3+ (II) 2II2+2e To balance electron (II) is to be multiplied by (3). Thus, 6I+Cr2O27+14H+3I2+2Cr3++7H2O Thus, I and I2 are not balanced.



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