Question

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

Answer 1

The answer is D. #platofam

Answer 2

Step-by-step 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.

`E^(o)_(cell) = E_(anode) - E_(cathode)`

= +ve

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

`\Delta G` = - nF
`E_(cell)`

= (-ve)(+ve)

= -ve

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