An iron nail is to be electroplated with nickel using a nickel plate to prevent it from rusting. The electrolyte used for this purpose is nickel sulphate. Based on the above information, answer the following questions.

What is the number of electrons involved during the reduction at the cathode?

[1 mark]

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Solution

The correct option is A 2
The reactions that take place during the process are:
$Cathode : N {i^{2 +}}^{2 +} + 2 {e^{-}}^{-} \to Ni Anode : Ni \to N {i^{2 +}}^{2 +} + 2 e^{-}$ Hence, 2 electrons are involved during the reduction at the cathode.

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The correct option is A 2The reactions that take place during the process are: Cathode: Ni2+ + 2e− → Ni Anode: Ni → Ni2+ + 2e−Hence, 2 electrons are involved during the reduction at the cathode.

The correct option is A 2
The reactions that take place during the process are:
$Cathode : N {i^{2 +}}^{2 +} + 2 {e^{-}}^{-} \to Ni Anode : Ni \to N {i^{2 +}}^{2 +} + 2 e^{-}$ Hence, 2 electrons are involved during the reduction at the cathode.