Question

The standard cell potential (Eºcell) of the reaction below is -0.55 V. The value of AGº for the reaction is _ J/mol. 12 (s) + 2Br (aq) → 21+ (aq) + Brz (1) Select one: O a. 0.54 O b. 0.55 c. 5.5 x 10-6 O O d. 1.1 x 105 o e. none of the above

Answer 1

1)

number of electrons being transferred, n = 2

F = 96500.0 C

use:

ΔG = -n*F*E

= -2*96500.0*-0.55

= 1.1*10^5 J/mol

Answer: d

2)

The root name is heptane.

So, the longest chain will have 7 carbon.

Beside that there should be one methyl group on 2nd and one methyl group on 3rd carbon.

So, there should be total of 9 carbon

a)

There are only 4 carbon

b)

There are only 8 carbon

c)

It has 7 carbon but longest chain has only 6 carbon

d)

This is correct

e)

There are only 5 carbon

Answer: d