If you calculate a value for ∆ G ° for a reaction using the values of Δ G f ∘ in Appendix 4 and get a negative number, is it correct to say that the reaction is always spontaneous? Why or why not? Free energy changes also depend on concentration. For gases, how is G related to the pressure of the gas? What are standard pressures for gases and standard concentrations for solutes? How do you calculate ∆ G for a reaction at nonstandard conditions? The equation to determine ∆G at nonstandard conditions has Q in it: What is Q ? A reaction is spontaneous as long as ∆ G is negative; that is, reactions always proceed as long as the products have a lower free energy than the reactants. What is so special about equilibrium? Why don’t reactions move away from equilibrium?
If you calculate a value for ∆ G ° for a reaction using the values of Δ G f ∘ in Appendix 4 and get a negative number, is it correct to say that the reaction is always spontaneous? Why or why not? Free energy changes also depend on concentration. For gases, how is G related to the pressure of the gas? What are standard pressures for gases and standard concentrations for solutes? How do you calculate ∆ G for a reaction at nonstandard conditions? The equation to determine ∆G at nonstandard conditions has Q in it: What is Q ? A reaction is spontaneous as long as ∆ G is negative; that is, reactions always proceed as long as the products have a lower free energy than the reactants. What is so special about equilibrium? Why don’t reactions move away from equilibrium?
Solution Summary: The author explains that thermodynamics is associated with heat, temperature, and its relation with energy and work. It helps predict whether a process will take place or not.
If you calculate a value for ∆G° for a reaction using the values of
Δ
G
f
∘
in Appendix 4 and get a negative number, is it correct to say that the reaction is always spontaneous? Why or why not? Free energy changes also depend on concentration. For gases, how is G related to the pressure of the gas? What are standard pressures for gases and standard concentrations for solutes? How do you calculate ∆G for a reaction at nonstandard conditions? The equation to determine ∆G at nonstandard conditions has Q in it: What is Q? A reaction is spontaneous as long as ∆G is negative; that is, reactions always proceed as long as the products have a lower free energy than the reactants. What is so special about equilibrium? Why don’t reactions move away from equilibrium?
+
C8H16O2 (Fatty acid) +
11 02 → 8 CO2
a. Which of the above are the reactants?
b. Which of the above are the products?
H2o CO₂
c. Which reactant is the electron donor? Futty acid
d. Which reactant is the electron acceptor?
e. Which of the product is now reduced?
f. Which of the products is now oxidized?
02
#20
102
8 H₂O
g. Where was the carbon initially in this chemical reaction and where is it now that it is
finished?
2
h. Where were the electrons initially in this chemical reaction and where is it now that it is
finished?
→
Acetyl-CoA + 3NAD+ + 1FAD + 1ADP 2CO2 + CoA + 3NADH + 1FADH2 + 1ATP
a. Which of the above are the reactants?
b. Which of the above are the products?
c. Which reactant is the electron donor?
d. Which reactants are the electron acceptors?
e. Which of the products are now reduced?
f. Which product is now oxidized?
g. Which process was used to produce the ATP?
h. Where was the energy initially in this chemical reaction and where is it now that it is
finished?
i. Where was the carbon initially in this chemical reaction and where is it now that it is
finished?
j. Where were the electrons initially in this chemical reaction and where is it now that it is
finished?
Biochemistry: Concepts and Connections (2nd Edition)
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