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21 May, 03:50

Which statement describes electrolysis?

(1) Chemical energy is used to produce an electrical change.

(2) Chemical energy is used to produce a thermal change.

(3) Electrical energy is used to produce a chemical change.

(4) Thermal energy is used to produce a chemical change

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  1. 21 May, 03:52
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    The answer is (3) electrical energy is used to produce a chemical change. They use the electrical energy to achieve some reaction that is not easy to react under common condition. For example: 2H2O - > 2H2 + O2.
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