During electrolysis of fused aluminium chlori | vedclass

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

Question

(C) The chemical reaction for the electrolysis of fused $AlCl_3$ is: $AlCl_3 \rightarrow Al^{3+} + 3Cl^-$. At the cathode: $Al^{3+} + 3e^- \rightarrow

Vedclass · Accepted Answer

$1.12$

Vedclass · Answer

(C) The chemical reaction for the electrolysis of fused $AlCl_3$ is: $AlCl_3 ightarrow Al^{3+} + 3Cl^-$. At the cathode: $Al^{3+} + 3e^- ightarrow Al$. At the anode: $2Cl^- ightarrow Cl_2 + 2e^-$. Given mass of $Al = 0.9 \ g$. Molar mass of $Al = 27 \ g/mol$. Moles of $Al = \frac{0.9}{27} = \frac{1}{30} \ mol$. According to the stoichiometry,$1 \ mol$ of $Al$ requires $3 \ mol$ of electrons,and $2 \ mol$ of $Cl^-$ produce $1 \ mol$ of $Cl_2$ (requiring $2 \ mol$ of electrons). Total electrons passed = $3 	imes 	ext{moles of } Al = 3 	imes \frac{1}{30} = 0.1 \ mol$. Moles of $Cl_2$ produced = $\frac{	ext{Total electrons}}{2} = \frac{0.1}{2} = 0.05 \ mol$. Volume of $Cl_2$ at $STP = 0.05 \ mol 	imes 22.4 \ L/mol = 1.12 \ L$.

During electrolysis of fused aluminium chloride,$0.9 \ g$ of aluminium was deposited on the cathode. The volume of chlorine liberated at the anode will be .............. $litres$ (at $STP$).

Similar Questions

What is the quantity of electricity (in Coulombs) required to deposit all the silver from $250 \text{ mL}$ of $1 \text{ M AgNO}_3$ solution?

Faraday's laws of electrolysis will fail when

How many amperes must be passed through a Down's cell to produce sodium metal at a rate of $30.0 \ kg/h$?

The current flowing in a copper voltameter is $3.2 \ A$. The number of copper ions $(Cu^{2+})$ deposited at the cathode per minute is

In the electrolysis of an aqueous $NiI_2$ solution using $Ni$ electrodes,what happens to the mass of the cathode upon passing $1$ equivalent of charge? (Given: atomic mass of $Ni = 59$)

Vedclass Test Series

Exam Paper Generator

Online Exam Module