Which of the changes to a voltaic cell of the general form X + + Y ⟶ X + Y + would result in an increase in the cell potential (i. e., more positive E cell )? an increase in active ion concentration at the anode an increase in temperature when K / Q < 1 an increase in temperature when K / Q > 1 an increase in active ion concentration at the cathode

Option (c) is the correct answer.

Explanation:

In an electrochemical cell, the potential difference present within the two half cells is known as cell potential.

Formula for cell potential according to Nernst equation is as follows.

Therefore, when an increase in the cell potential (i.e., more positive E cell ) at the cathode takes place then there occurs an overall increase in the cell potential.

Also, when then also an increase in temperature will lead to increase in the cell potential.

Thus, we can conclude that out of the given options an increase in temperature when > 1, would result in an increase in the cell potential (i.e., more positive E cell).

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