Equilibrium Constants

[DanielLee3H]

Why is a higher K, or more products than reactants, favorable? Meaning negative delta G*?

[Zulfiqar Lokhandwala 1H]

Because the equation is that delta G*=-RTlnK and we know K= [P]/[R]
So if the K=1 delta G would equal -RTln1 and ln1=0
If K<1 (when R is greater than P) then it would be ln(.5 for example) which is a negative number. The natural log of all numbers less than 1 and greater than 0 is negative. Which would make the delta G* a positive value
If K>1 (R is less than P) then it would be ln(1.1 for example) which is positive cause the natural log of all numbers greater than 1 is positive. Which would make the delta G* negative