Question

The conversion of sucrose to CO2 and water has a very large and negative DG’o. Why is the conversion not spontaneous?

Only some reactions have a negative DG’o.
Conversion requires heat and O2.
Conversion requires the presence of cofactors.
The reaction needs to be in solution.
There is a very large activation energy barrier.

Answer 1

thinking it's the last statement but want to double check

Answer 2

http://bio.classes.ucsc.edu/bio100/BIO100Summer/Lecture5/Lect5.ppt
This article says if you scroll down that activation energy is huge, and that's why it's not spontaneous.

Answer 3

thank you