Electrolysis of an Aqueous Solution

Presentation

•

Chemistry

•

12th Grade

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Easy

Marissa sebastian Moe

Used 2+ times

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4 Slides • 4 Questions

Electrolysis of an Aqueous Solution

Please refer to your textbook on page 37

In electrolysis of an aqueous solution:

apart from the ions of the solute, the hydrogen ions, H+ and hydroxide ions, OH− from the partial dissociation of water are also present.
example: In electrolysis of aqueous copper(II) sulphate, ions presence are copper(II) ion, sulphate ion, hydrogen ions, and hydroxide ions

Who moves to anode and cathode?

anions move to to anode
cations move to cathode
oxidation reaction occurs at anode
reduction reaction occurs at cathode

Analyze this information before you proceed with the quiz.

Multiple Select

What are the three factors that affect the selection of ions to be discharged at the electrodes for the electrolysis of an aqueous solution? Tick on the correct answers.

E* value

Types of solution used

Concentration of solution

Type of electrode

Multiple Choice

If the factor involved is E* value, the ion chosen to be discharged at anode will be...

Cations with a more positive or less negative E0 value in the standard electrode potential series will be easier to be discharged

Anions with a more negative or less positive E0 value in the standard electrode potential series will be easier to be discharged

Multiple Choice

Factor of concentration of solution are only considered for the selection of ions at the anode if the aqueous solution contains

alkali

halide ions

Multiple Choice

Factor of type of electrode are only considered for

inert electrodes

active electrodes

Electrolysis of an Aqueous Solution

Please refer to your textbook on page 37

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