Answer:
A and B are unfavorable reactions.
Explanation:
In chemical thermodynamics, an endergonic reaction is also called a nonspontaneous reaction or an unfavorable reaction. it's a chemical reaction in which the change in free energy is positive, and energy is absorbed.
In chemical thermodynamics, an exergonic reaction is also called a spontaneous reaction or a favorable reaction. it's a chemical reaction in which the change in free energy is negative.
ΔG>0
If the Gibbs free energy of the reaction is positive than the reaction will be non spontaneous .
If the Gibbs free energy of the reaction is negative than the reaction will be spontaneous
Gibbs free energy is an energy which that can be use to convert into useful work.
ΔG=ΔH-TΔS
with ΔG= Gibbs free energy
with ΔH = enthalpy of reaction
with T = temperature of eh reaction
ΔS = Entropy change
The reaction A: Pi+glucose⟶glucose-6-phosphate+H2O
The ΔG is positive. This is an nonspontaneous reaction or an unfavorable reaction
The reaction B: Pi+fructose-6-phosphate⟶fructose-1,6-bisphosphate+H2O
The ΔG is positive. This is an nonspontaneous reaction or an unfavorable reaction.
The reaction C: ATP+H2O⟶ADP+Pi
The ΔG is negative. This is a spontaneous reaction or a favorable reaction.
A and B are unfavorable reactions.