Two electrolytic cells,one containing acidifi | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) According to Faraday's second law of electrolysis,when the same quantity of electricity is passed through cells connected in series,the mass of th

Vedclass · Accepted Answer

$3 : 2$

Vedclass · Answer

(D) According to Faraday's second law of electrolysis,when the same quantity of electricity is passed through cells connected in series,the mass of the substance deposited is proportional to its equivalent weight $(E)$.The ratio of the mass of iron deposited is given by: $\frac{W_1}{W_2} = \frac{E_1}{E_2}$.For $FeCl_2$,the oxidation state of $Fe$ is $+2$,so the equivalent weight $E_1 = \frac{	ext{Atomic mass}}{2} = \frac{56}{2} = 28$.For $FeCl_3$,the oxidation state of $Fe$ is $+3$,so the equivalent weight $E_2 = \frac{	ext{Atomic mass}}{3} = \frac{56}{3} = 18.67$.Therefore,the ratio $\frac{W_1}{W_2} = \frac{56/2}{56/3} = \frac{3}{2} = 3:2$.

Two electrolytic cells,one containing acidified ferrous chloride $(FeCl_2)$ and the other containing acidic ferric chloride $(FeCl_3)$,are connected in series. When an electric current is passed through the cells,what is the ratio of iron deposited at the cathodes in the two cells?

Similar Questions

When a current of $2 \ A$ is passed for $2 \ hours$ through a copper voltameter,$W \ g$ of copper is deposited. If a current of $1 \ A$ is passed for $4 \ hours$ through the same voltameter,how much copper will be deposited?

$A$ solution of $CuSO_4$ is electrolysed using a current of $1.5 \ A$ for $10 \ minutes$. What mass of $Cu$ is deposited at the cathode (in $g$)? (Atomic mass of $Cu = 63.7$)

What is the $SI$ unit for electrochemical equivalent?

When $9.65 \ C$ of electricity is passed through a solution of silver nitrate (atomic weight of $Ag = 108$),the amount of silver deposited is $............ \ mg$.

How many $Faradays$ are required to generate one gram atom of magnesium from $MgCl_2$?

Vedclass Test Series

Exam Paper Generator

Online Exam Module