Voltaic cells produce a positive overall cell potential. what does this indicate?

Explanation:

Voltaic cell is a cell in which a chemical reaction occurs that leads to generation of electricity.

To calculate cell potential of a voltaic cell, the formula is as follows.

                                    = +ve

Also, a positive cell potential indicates that a reaction is spontaneous as follows.

                      = - nF

                              = (-ve)(+ve)

                              = -ve

Therefore, value of comes out to be -ve. Therefore, it shows that when voltaic cells produce a positive overall cell potential then the reaction is spontaneous.

one negative thing it that it can kill water animals. another negative thing is it can cause the destruction of ecosystem. one way water pollution can be reduced is to conserve energy.