heat

The standard free engery of a reaction is related to the equilibrium constant. How many KJ/mol change is required for the equilibrium constant to change by 10 at 25 degreesC?
a.1.4 kj/mol
b. 5.6kj/mol
c.7.9kj/mol
d. 18.8kj/mol

Which thermodynamic function depends on the path taken from state 1 to state 2?
a. Internal engery
b. Enthalpy
c. Work
d. Free engery

What is Entropy change for a solution when a salt, such as MgCl2 is dissoloved in water?
What is the change in entrophy upon solvation when a nonpolar molecule is mixed with water?
a. Increase
b. Decrease
c. No significate change
d. connot predict

An important charcteristic of living system is that they:
a. Always remain at equilibrium
b. Are perturbed from equilibrium only when experiencing stress
c. Are never at equilibrium
d. Are only at equilibrium when metabolic activity is low

Entropy is related to the number of states which are attained, all equivalent energy. What are the units of entropy?
a.Unitless
b. kj/mol
c. kj/mol-deg
d. kj

The hydrolysis of phosphate from which of the following molecules is least thermodynamically favorable?
a. ADP
b. Creatine phosphate
c. Gulcose phosphate
d. Phosphoenolpyruvate

ATP exhibits which of the following characteristic?
a. It is rapidly hydrolyzed in water
b. It is used for long-term engery storage in the cell
c. It is a kinetically stable molecule
d.It is a thermodynamically stable molecule

The standard transfere potential for the phophate group of phosphoenol-pyruvate(PEP) is -62kj/mol and that for ATP is -31kj/mpl. What is the standard free engery change for the transfere of a phosphate from PEP to ADP?
a. +31kj/mol
b. -31kj/mol
c.-93kj/mpl
d. +93kj/mol

The concentration of ATP in the muscle cells of some animals is found to remain relatively constant during peroids when the muscles are contracting or at rest. This is because?
a. ATP is not the engery source utilized in muscle contraction
b. ATP is rapid depleted, but is also rapid synthesized to keep the concentration effectively constant
c. Glucose-6-phosphate is the main engery source in muscles
d. The amount of ATP consumed is insignificant

The high free engery change for the hydrolysis of a thiol ester, as found in acetyl-CoA, as compared to that for the hydrolysis of a simple ester, is partly due to:
a. The greater resonance stability in a simple ester due to a better p-electron overlap in a CO linkage than in a CS linkage
b. The gain in resonance engery in the product, acetate
c. The high value for the bond engery in the (S-C) bond
d. Reduction of the unfavorable electrostatic interactions in the acetyl-CoA