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Concepts Of Physics MCQ Edition [Volume 2]

Exam: Concepts Of Physics MCQ Edition [Volume 2]
Subject: Physics
Chapter: Thermal and Chemical Effects of Electric Current

Concepts Of Physics MCQ Edition [Volume 2] · Physics · Thermal and Chemical Effects of Electric Current

Determine the charge required to pass through an electrolyte in...

Determine the charge required to pass through an electrolyte in order to liberate one atom of a divalent material.

Options

A $1.6 \times 10^{-19} \text{ C}$
B $6.4 \times 10^{-19} \text{ C}$
C $3.2 \times 10^{-19} \text{ C}$
D $1.93 \times 10^{5} \text{ C}$

Correct answer

C. $3.2 \times 10^{-19} \text{ C}$

Step-by-step solution

A divalent material requires

2

electrons to reduce one ion into a neutral atom.

The charge of one electron is

e = 1.6 \times 10^{-19} \text{ C}

.

The total charge required to liberate one atom is

q = 2e

.

Substituting the value of

e

, we get

q = 2 \times 1.6 \times 10^{-19} \text{ C} = 3.2 \times 10^{-19} \text{ C}

.

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