When the same quantity of electricity is pass | vedclass

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

Question

(B) According to Faraday's law of electrolysis,the number of moles of metal deposited is given by $n = \frac{Q}{zF}$,where $Q$ is the charge,$z$ is th

Vedclass · Accepted Answer

$1 : \frac{1}{2} : \frac{1}{3}$

Vedclass · Answer

(B) According to Faraday's law of electrolysis,the number of moles of metal deposited is given by $n = \frac{Q}{zF}$,where $Q$ is the charge,$z$ is the valency (charge on the ion),and $F$ is Faraday's constant.Since the same quantity of electricity $(Q)$ is passed,the number of moles is inversely proportional to the valency $(z)$.For $Ag^{+}$ $(z=1)$,moles $= \frac{1}{1} = 1$.For $Cu^{2+}$ $(z=2)$,moles $= \frac{1}{2}$.For $Fe^{3+}$ $(z=3)$,moles $= \frac{1}{3}$.Therefore,the ratio of moles deposited is $1 : \frac{1}{2} : \frac{1}{3}$.

When the same quantity of electricity is passed through solutions of $Ag^{+}$,$Cu^{2+}$,and $Fe^{3+}$ ions,what is the ratio of the number of moles of each metal deposited?

Similar Questions

In the Hall-Heroult process,if a current of $10 \ A$ is passed for $8 \ \text{days}$ and $1 \ \text{hour}$,how many kilograms of carbon anode will be consumed?

$A$ solution of $Ni(NO_{3})_{2}$ is electrolysed between platinum electrodes using a current of $5 \, A$ for $20 \, minutes$. What mass of $Ni$ is deposited at the cathode (in $, g$)?

What weight of copper will be deposited by passing $2$ Faradays of electricity through a cupric salt? (Atomic weight of $Cu = 63.5$)

What is the number of faraday required to form $1 \ mol \ H_2$ by reduction of $H^{+}$ ions?

If $5 \ A$ of current is passed for $193 \ s$ through a solution containing $Cu$ salt,$0.32 \ g$ of copper is deposited. What is the oxidation state of the $Cu$ in the salt?

Vedclass Test Series

Exam Paper Generator

Online Exam Module