What is the value of D Go' for the pathway A <=> B <=> C <=>...
What is the value of D Go' for the pathway A <=> B
<=> C <=> D?
Reaction D Go'
B <==> A +5 kcal/mol
C <==> A +5 kcal/mol
C <==> D -15 kcal/mol
A. +10
B. +5
C. -10
D. -15
E. -20
I think the answer is E. Can you please explain?
Homework Answers
Answer –
We are given,
B <-----> A ΔGo = +5 kcal/mol ……1
C <---> A ΔGo = +5
kcal/mol…..2
C <-----> D ΔGo = -15
kcal/mol…..3
We need to calculate the ΔGo for the A <-----> B <-----> C <-----> D
Now we need to calculate first A <-----> B , so we just need to reverse the first reaction
A <-----> B ΔGo = - 5 kcal/mol ….4
Now from B <-----> C we need to add equation number 1 and
reverse the 2.
B <-----> A ΔGo = +5 kcal/mol
A <-----> C ΔGo = - 5 kcal/mol
B <-----> C ΔGo = 0.00 kcal/mol ….5
Now we need to added equation 4 , 5 and 3
A <-----> B ΔGo = - 5 kcal/mol
B <-----> C ΔGo = 0.00 kcal/mol
C <-----> D ΔGo = -15 kcal/mol
So the ΔGo for the A <-----> B <-----> C <-----> D ΔGo = -20.0 kcal/mol
So answer is E) -20
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