Question

d) R in joules, n=land 1=1
In the Nc
a) R in calories, n=1 and
c) R in joules, n=1 and T=298
When temperature coefficient of emf of cell reaction is zero, then
a) AG-AH= 1
b) AG-AH=-TAS
c) AG=-AH
HAG=AH
emical cell H2 (PH =P)| H* (a=1)| H, (PH =P,
+ ERHE+E​

Answer 1

Explanation:

We have,

ΔG=ΔH−ΔS ---------(1)

Also,

ΔG=−nFE

cell

=−2×96500×2=−4×96500

Now, ΔS=nF

dT

dE

=2×96500×(−5×10

−4

)=96.5J

Now from equation (1)

ΔH=ΔG+TΔS=−4×96500+298×(−96.5)≈−412.8