According the equation: 2H, O+ electricity → 2H2 + O2 A) An electrolytic cell, because it absorbs energy.

B) A voltaic cell, because it releases energy. C) A voltaic cell, because it absorbs

energy.

D) An electrolytic cell, because it releases energy.

E) All of them

A) An electrolytic cell, because it absorbs energy.

Explanation:

The major difference between an electrolytic cell and a voltaic cell is that, in an electrolytic cell, there must be input of energy from outside (a cell) to drive the non spontaneous reaction while in a voltaic cell, the reaction proceeds on its own and releases energy which could be harnessed to do work.

Hence, considering the equation; 2H2O+ electricity → 2H2 + O2 , energy is supplied as electricity in order for the process to take place. This is an example of an electrolytic cell.

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.