Redox Reactions And Electrochemistry Ques 224

Question: Zn(s)+Cl2(1 atm)Zn2++2Cl . Ecell0 of the cell is 2.12 V. To increase E [BVP 2004]

Options:

A) [Zn2+] should be increased

B) [Zn2+] should be decreased

C) [Cl] should be decreased

D) PCl2 should be decreased

Show Answer

Answer:

Correct Answer: B

Solution:

According to nernst’s equation Ecell=Ecell0nRTFlogc1c2

For Zn(s)+Cl2(1 atm)Zn2++2Cl c1=[Zn2+] and c2=[Cl]

Hence to increase E, c1 should be decreased and c2 should be increased is [Zn2+] should be decreased and Cl should be increased.



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