Equal amounts of electricity are passed throu | vedclass

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

Question

(B) According to Faraday's second law of electrolysis,the mass of substances deposited is proportional to their equivalent weights when the same quant

Vedclass · Accepted Answer

$0.17$

Vedclass · Answer

(B) According to Faraday's second law of electrolysis,the mass of substances deposited is proportional to their equivalent weights when the same quantity of electricity is passed through different electrolytes.$\frac{W_{Ni}}{W_{Cr}} = \frac{E_{Ni}}{E_{Cr}}$Here,$W_{Ni} = 0.3 \ g$,$Atomic \ mass \ of \ Ni = 59$,$Valency \ of \ Ni = 2$,$Atomic \ mass \ of \ Cr = 52$,$Valency \ of \ Cr = 3$.Equivalent weight of $Ni$ $(E_{Ni})$ = $\frac{59}{2} = 29.5$.Equivalent weight of $Cr$ $(E_{Cr})$ = $\frac{52}{3} = 17.33$.Substituting the values: $\frac{0.3}{W_{Cr}} = \frac{29.5}{17.33}$.$W_{Cr} = \frac{0.3 	imes 17.33}{29.5} \approx 0.176 \ g$.Rounding to the nearest option,the answer is $0.17 \ g$.

Similar Questions

How much charge is required for the deposition of $1$ equivalent of a substance?

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 $Ni = 59$)

When $3 \ F$ of electricity is passed through an aqueous solution of iron $(II)$ bromide,what is the mass of iron metal deposited at the cathode in $g$?

The mass of carbon anode consumed (giving only carbon dioxide) in the production of $270 \ kg$ of aluminium metal from bauxite by the Hall process is ............... $kg$.

How many coulombs are required for the oxidation of $1 \, mol$ of $H_2O_2$ to $O_2$?

Vedclass Test Series

Exam Paper Generator

Online Exam Module