Explain the underlined line 

Electrochemistry is the study of production of electricity from energy released during spontaneous chemical reactions and the use of electrical energy to bring about non-spontaneous chemical transformations.
 

Dear Student,

Firstly underline the text in the provided question. Here I am telling you the meaning of the whole line for your reference.

Electrical energy is used to bring about non-spontaneous reaction while energy release during the spontaneous reaction is used to generate electricity.

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