A voltaic cell is one in which

Question

Quizplus · Accepted Answer

A voltaic cell generates a potential difference through a spontaneous redox reaction. Therefore, the standard cell voltage must be positive for the reaction to be spontaneous and the cell to function as a source of energy. Choice A is incorrect because the standard reduction potentials of the two half-cell reactions do not need to be equal for a voltaic cell to function. Choice C is incorrect because a negative standard cell voltage means the reaction is non-spontaneous and a source of energy cannot be obtained from the cell.

A Voltaic Cell Is One in Which