(A) The reaction for the deposition of copper is: $Cu^{2+} + 2e^- \rightarrow Cu(s)$.Total time in seconds: $t = (6 \times 60) + 26 = 386 \ s$.Total c

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

(A) The reaction for the deposition of copper is: $Cu^{2+} + 2e^- \rightarrow Cu(s)$.Total time in seconds: $t = (6 \times 60) + 26 = 386 \ s$.Total charge passed: $Q = I \times t = 2.5 \ A \times 386 \ s = 965 \ C$.According to Faraday's law,$2 \ F$ $(2 \times 96500 \ C)$ of charge deposits $1 \ \text{mole}$ of $Cu$ $(63.5 \ g)$.Mass of $Cu$ deposited = $\frac{63.5 \times 965}{2 \times 96500} = \frac{63.5}{200} = 0.3175 \ g$.

Class 12 Chemistry Electrochemistry Faraday’s law of electrolysis

Medium

$A$ current of strength $2.5 \ A$ was passed through $CuSO_4$ solution for $6 \ \text{minutes} \ 26 \ \text{seconds}$. The amount of copper deposited is .............. $g$ (Atomic weight of $Cu = 63.5$) $(1 \ F = 96500 \ C)$

A
$0.3175$
B
$3.175$
C
$0.635$
D
$6.35$

Explore More

Browse All

Question Bank

All Subjects

Class 12 Questions

Class 12

Chemistry Questions

Chapter

Electrochemistry

Subtopic

Faraday’s law of electrolysis

Amount of electricity that can deposit $108 \ g$ of silver from $AgNO_3$ solution is

Easy

View Solution

How much current should be passed through acidified water for $100 \ s$ to liberate $0.224 \ L$ of $H_2$ gas at $STP$ (in $A$)?

Difficult

View Solution

$A$ current of $16\, A$ flows through molten $NaCl$ for $10\, min$. The amount of metallic sodium that appears at the negative electrode would be ............ $g$.

Medium

View Solution

To deposit a silver layer of thickness $5 \times 10^{-3} \ cm$ on a surface area of $80 \ cm^2$ (density $= 10.5 \ g \ cm^{-3}$),a current of $3 \ A$ is passed through a silver nitrate solution for ......... $sec$.

Medium

View Solution

What will be the weight of $Al$ deposited at the cathode when $0.5 \ F$ of electricity is passed through an aqueous solution of $AlCl_3$ (in $g$)? (Atomic mass of $Al = 27$)

MediumMHT CET 2022

View Solution

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial

For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free

For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo

$A$ current of strength $2.5 \ A$ was passed through $CuSO_4$ solution for $6 \ \text{minutes} \ 26 \ \text{seconds}$. The amount of copper deposited is .............. $g$ (Atomic weight of $Cu = 63.5$) $(1 \ F = 96500 \ C)$

Similar Questions

Amount of electricity that can deposit $108 \ g$ of silver from $AgNO_3$ solution is

How much current should be passed through acidified water for $100 \ s$ to liberate $0.224 \ L$ of $H_2$ gas at $STP$ (in $A$)?

$A$ current of $16\, A$ flows through molten $NaCl$ for $10\, min$. The amount of metallic sodium that appears at the negative electrode would be ............ $g$.

To deposit a silver layer of thickness $5 \times 10^{-3} \ cm$ on a surface area of $80 \ cm^2$ (density $= 10.5 \ g \ cm^{-3}$),a current of $3 \ A$ is passed through a silver nitrate solution for ......... $sec$.

What will be the weight of $Al$ deposited at the cathode when $0.5 \ F$ of electricity is passed through an aqueous solution of $AlCl_3$ (in $g$)? (Atomic mass of $Al = 27$)

Vedclass Test Series

Exam Paper Generator

Online Exam Module