Concepts Of Physics MCQ Edition [Volume 2]PhysicsThermal and Chemical Effects of Electric Current
Determine the charge required to pass through an electrolyte in order to liberate one atom of a divalent material.
Options
- A1.6 10⁻¹⁹ C
- B6.4 10⁻¹⁹ C
- C3.2 10⁻¹⁹ C
- D1.93 10⁵ C
Correct answer
C. 3.2 10⁻¹⁹ 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 10⁻¹⁹ C . The total charge required to liberate one atom is q = 2e . Substituting the value of e , we get q = 2 1.6 10⁻¹⁹ C = 3.2 10⁻¹⁹ C .