The diagram below represents an operating cell that is used to plate silver onto a nickel key.

Regents Chemistry Exam August 2024 Question 49

49 The diagram below represents an operating cell that is used to plate silver onto a nickel key.

Which statement describes the reaction that occurs inside the beaker?

Which statement describes the reaction that occurs inside the beaker?

(1) A spontaneous reaction converts electrical energy to chemical energy.

(2) A spontaneous reaction converts chemical energy to electrical energy.

(3) A nonspontaneous reaction uses electrical energy to produce a chemical change.

(4) A nonspontaneous reaction uses chemical change to produce electrical energy.

Solution:

Electroplating is a reaction that is nonsponatenous and requires a source of energy as shown in the diagram above (power source). Electrical energy is used to product a chemical change. Choice 3 is the correct answer choice.

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