Exam 1 practice questions

Question 1

the standard free energy change of a reaction A -> B is -350 kcal/mol. which of the following can be deduced about this reaction?

A. K’eq < 1
B. At equilibrium, [products] > [reactants]
C. The forward reaction will proceed spontaneously under standard conditions.
D. The forward reaction will proceed spontaneously under cellular conditions
E. A and B
F. B and C

Answer 1

F. B and C

Question 2

for the amino acid ala, what is the ratio of the anion species to the zwitterion species at pH=7?

pka amino acid group: 8.0
pka carboxyl group: 3.1

Answer 2

10^-1 = 0.01