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Standard VIII

Chemistry

Hygroscopy, Efflorescence, Deliquescence

During electr...

Question

During electroplating of an article with nickel –
Give the reaction of the electrolysis at

$A .$ The cathode

$B .$ The anode

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Solution

Reaction-

At cathode: $N i^{2 +} (a q) + 2 e^{-} \to N i (s)$

At anode: $N i (s) \to N i^{2 +} (a q) + 2 e^{-}$

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Similar questions

(a) Select the correct answer.

A compound which during electrolysis in its molten state, liberates a reddish brown gas at the anode.

(i) Sodium chloride

(ii) Copper [II] oxide

(iii) Copper [II] sulphate

(iv) Lead [II] bromide

(b) During electroplating of an article with nickel,

(i) Name

A. The electrolyte

B. The cathode

C. The anode

(ii) Give the reaction of the electrolysis at

A. The cathode

B. The anode

(c) A, B and C are three electrolytic cells, connected in different circuits. Cell 'A' contains NaCl soln., and the bulb in the circuit glow brightly, when the circuit is completed. Cell 'B' contains acetic acid and the bulb does not glow. Give reason for each observation.

Q. During electroplating of an article with nickel- Name:

A .

The electrolyte

B .

The cathode

C .

The anode

Q. During electroplating of an article with nickel, the reduction reaction of the electrolysis occurs at:

Q. During electroplating by electrolysis, the article to be electroplated is:

(i) Name the product formed at the anode during the electrolysis of acidified water using platinum electrodes.

(ii) Name the metallic ions that should be present in the electrolyte when an article made of copper is to be electroplated with silver.

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Hygroscopy, Efflorescence, Deliquescence

Standard VIII Chemistry

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During electroplating of an article with nickel – Give the reaction of the electrolysis at A. The cathode B. The anode

Reaction- At cathode: Ni2+ (aq)+2e−→Ni (s) At anode: Ni (s)→Ni2+ (aq)+2e−

During electroplating of an article with nickel –
Give the reaction of the electrolysis at

$A .$ The cathode

$B .$ The anode

Reaction-

At cathode: $N i^{2 +} (a q) + 2 e^{-} \to N i (s)$

At anode: $N i (s) \to N i^{2 +} (a q) + 2 e^{-}$