Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
Home  >>  JEEMAIN and AIPMT  >>  Chemistry  >>  Redox Reactions
0 votes

Which of the following reactions are not possible ?

$\begin{array}{1 1}(a)\;Cl_2+KBr\rightarrow KCl+Br_2\\(b)\;Br_2+KI\rightarrow KBr+I_2\\(c)\;Zn+H^+\rightarrow Zn^{+2}+H_2\\(d)\;Cu+H^+\rightarrow Cu^{+2}+H_2\end{array}$

Can you answer this question?

1 Answer

0 votes
By electro chemical series $E^o_{Cl_2/Cl^-} > E^o_{Br_2/Br^-} > E^o_{I_2/I^-}$
So (a) & (b) are possible.
$E^o_{Cu^{+2}/Cu} > E^o_{H^+/H_2} > E^o_{Zn^{+2}/Zn}$
So (c) is possible and (d) is not possible.
Hence (d) is the correct answer.
answered Dec 11, 2013 by sreemathi.v
Ask Question
student study plans
JEE MAIN, CBSE, NEET Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App