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In an electro...

Question

In an electrolytic cell the electrode at which the electrons enter is called the_; the chemical change that occurs at this electrode is called_.

A

Anode, oxidation

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B

Anode, reduction

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C

Cathode, oxidation

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D

Cathode, reduction

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Solution

The correct option is D Cathode, reduction
Oxidation Is Loss, Reduction Is Gain.
So, this means that reduction is happening at our electrode.
Also, remember 'Red Cat' - Reduction Cathode
This will be cathode.
Always remember these 3 mnemonics:
OILRIG
Red Cat
An Ox

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Similar questions

Q. In an electrolytic cell, the electrode at which the electrons enter the solution is called the ________. The chemical change that occurs at this electrode is called as _________.

Q. Assertion :Anode is the electrode at which oxidation occurs and cathode is the electrode at which reduction occurs. Reason: Anode and cathode in electrochemical cells and electrolytic cells have opposite polarity.

Q. Assertion :In an electrochemical cell, the electrode that is the site of reduction is called the anode.
Reason: Oxidation always occurs at the cathode.

Q. Statement 1: In an electrochemical cell, the electrode that is the site of reduction is called the anode.
Statement 2: Oxidation always occurs at the cathode.

Electrochemical Battery

An electrochemical battery is a device powered by oxidation and reduction reactions that are physically separated. So that the electrons must travel through a wire from the reducing agent to the oxidizing agent.

The reducing agent loses electrons and is oxidized in a reaction that takes place at an electrode is called the anode. The oxidizing agent gains electrons and is reduced in a reaction that takes at an electrode is called the cathode.

To maintain a net zero charge in each compartment, there is a limited flow of ions through a salt bridge.

For example, in a car battery the reducing agent is oxidized by the following reaction, which involves a lead (

P b

) anode and sulfuric acid (

H_{2} S O_{4}

). Lead sulfate (

P b S O_{4}

H

), and electrons (

e^{-}

) are produced.

At the cathode, the below reaction occurs :

P b O_{2} + H_{2} S O_{4} + 2 H^{+} + 2 e^{-} \to

At the anode, the below reaction occurs :

P b + H_{2} S O_{4} \to P b S O_{4} + 2 H^{+} + 2 e^{-}

Electrons are produced by a chemical reaction that takes place at the:

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