Question

1 mole each of $AgN{O}_3,CuS{O}_4$ and $AlC{l}_3$ is electrolysed. Number offaradays required are in the ratio of

• A. $1:1:1$
• B. $1:2:3$
• C. $3:2:1$
• D. $1:3:1$

Answer 1

Answer: (B)

$A{g}^{+}+e^{-}\to Ag$ $C{u}^{2+}+2e^{-}\to Cu$ $A{l}^{3+}+3e^{-}\to Al$