Question

Using the two cell reduction potentials shown for their corresponding reaction, calculate the cell potential for a voltaic cell made from these two systems. Question 16 options: A) 1.68 V B) –1.68 V C) –0.78 V D) 0.78 V

Answer 1

The right alternative is Option D (0.78 V).

Step-by-step explanation:

According to the question,

The cell potential will be:

=
`E^0_(Cr_2 O_7/er^(3+))- E^0_(Fe^(2+)/Fe)`

By putting the values, we get

=
`1.23-0.45`

=
`0.78 \ V`

Thus the above is the correct option.