Three faradays of electricity are passed thro | vedclass

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

Question

(C) The reduction reactions at the cathodes are:$Al^{3+} + 3e^- 	o Al$ (requires $3 \ mol$ of electrons for $1 \ mol$ of $Al$)$Cu^{2+} + 2e^- 	o Cu$

Vedclass · Accepted Answer

$1 \ mol : 1.5 \ mol : 3 \ mol$

Vedclass · Answer

(C) The reduction reactions at the cathodes are:$Al^{3+} + 3e^- 	o Al$ (requires $3 \ mol$ of electrons for $1 \ mol$ of $Al$)$Cu^{2+} + 2e^- 	o Cu$ (requires $2 \ mol$ of electrons for $1 \ mol$ of $Cu$)$Na^+ + e^- 	o Na$ (requires $1 \ mol$ of electrons for $1 \ mol$ of $Na$)Given $3 \ F$ ($3 \ mol$ of electrons) are passed through each cell:Moles of $Al$ deposited $= \frac{3 \ F}{3 \ F/mol} = 1 \ mol$Moles of $Cu$ deposited $= \frac{3 \ F}{2 \ F/mol} = 1.5 \ mol$Moles of $Na$ deposited $= \frac{3 \ F}{1 \ F/mol} = 3 \ mol$Therefore,the ratio is $1 \ mol : 1.5 \ mol : 3 \ mol$.

Three faradays of electricity are passed through molten $Al_2O_3$,aqueous solution of $CuSO_4$ and molten $NaCl$ taken in different electrolytic cells. The amount of $Al$,$Cu$ and $Na$ deposited at the cathodes will be in the ratio of

Similar Questions

$A$ steady current of $5 \, A$ is maintained for $45 \, min$. During this time,it deposits $4.572 \, g$ of zinc at the cathode of a voltameter. The $E.C.E.$ of zinc is:

The number of moles of electrons passed when a current of $2 \ A$ is passed through a solution of electrolyte for $20 \ minutes$ is

One Faraday of electricity when passed through a solution of copper sulphate deposits:

When a current of $2 \ A$ is passed through a molten tin salt for $5 \ hours$,$22.2 \ g$ of tin is deposited. What is the oxidation state of tin in the salt? (Atomic weight of $Sn = 118.69$)

The number of coulombs required for the deposition of $107.870 \ g$ of silver is

Vedclass Test Series

Exam Paper Generator

Online Exam Module