Electrolytic Cells and Electrolysis

IMPORTANT

Electrolytic Cells and Electrolysis: Overview

This Topic covers sub-topics such as Electrolysis, Electrodes, Cathode, Anode, Types of Electrodes, Electrolytic Cells and, Arrhenius Theory for Dissociation/Ionisation of Electrolysis

Important Questions on Electrolytic Cells and Electrolysis

MEDIUM
IMPORTANT

In hydrogen-oxygen fuel cell, combustion of hydrogen occurs to –

HARD
IMPORTANT

The image below shows electrolysis of an electrolyte using a DC voltage source.

Question Image

Based on this, Which of the following statements is/are correct?

(i) The solution remains electrically neutral during electrolysis.

(ii) Electrons flow from the current source towards the solution at one electrode, and an equal number of electrons flow away from the solution at the other electrode.

(iii) The number of positive ions moving towards one electrode is always equal to the number of negative ions moving towards the other electrode.

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In the electrolytic cell, flow of electrons is from 

EASY
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Which of the following metals are obtained by electrolysis of their chlorides in molten state?

(1) Na                (2) Ca 

(3) Fe                 (4) Cu

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A platinum electrode is an reactive electrode. 

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What are the composition of the electrodes?

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Name the different types of electrodes?

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An Arrhenius _____ is a substance that dissociates in water to form hydroxide OH- ions.

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_____ theory for the dissociation of electrolytes states that acids are substances that dissociate in water to yield electrically charged atoms or molecules, called ions.

HARD
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Write limitations of Arrhenius theory of electrolytic dissociation.

MEDIUM
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Explain the Arrhenius theory for the dissociation of electrolytes.

EASY
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In electrochemical cell, oxidation and reduction occurs at

MEDIUM
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Which of the following statements is not applicable to electrolytic conductors?

EASY
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The gas evolved at the anode when K2SO4 (aq) is electrolyzed between Pt electrodes is:

EASY
IMPORTANT

For daniel cell reaction Kc=1012 then Ecell ° and the cell reaction will be:-

MEDIUM
IMPORTANT

Which of the following is an incorrect statement:

MEDIUM
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Based on the cell representation for a spontaneous reaction, at the anode:

Ag(s)|AgCl(s)|Cl-(aq)Br-(aq)Br2()C(s)

HARD
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The highly efficient method of obtaining beryllium is :

MEDIUM
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Name the electrode at which reduction occurs

HARD
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How many coulombs are required for the oxidation of one mole of H2O to O2?