Q. Which of the following reactions cannot be Abase for electrochemical cell?
A) $H_{2} + \ O_{2}\ \longrightarrow \ H_{2}O$
B) $AgNO_{3}\ + \ Zn\ \rightarrow \ Zn\ ({NO}_{3})_{2}\ + \ Ag$
C) $AgNO_{3}\ + \ NaCl\ \rightarrow \ AgCl \downarrow \ + \ Na{NO}_{2}$
D) ${KMnO}_{4} + \ {FeSO}_{4} + \ H_{2}{SO}_{4}\ \longrightarrow$
$\ K_{2}{SO}_{4} + \ {Fe}_{2}({SO}_{4})_{3} + \ {MnSO}_{4} + \ H_{2}O$
Explanation
(d)
Electrochemical cell are based upon the reaction between various electrolytes. The reaction given in option (d) does not involve electrolytes, so it cannot be Abase for electrochemical cell.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.