State whether each of the follow statements is True or False. a) A catalyst lowe

ID: 872486 • Letter: S

Question

State whether each of the follow statements is True or False.

a) A catalyst lowers the activation energy of a reaction.

b) Doubling all the stoichiometric coefficients of a chemical reaction doubles the reaction rate.

c) The rate-determining step is the fastest step in a reaction mechanism

d) At equilibrium the forward rate of the reaction is zero.

e) At equilibrium the reaction quotient Q is equal to the equilibrium constant

f) HF and F- form a conjugate base pair

g) For the titration of a weak acid with a strong base, the equivalence point occurs at pH > 7

h) a buffer can be made by neutralizing half of the acid in a solution of a weak acid with a strong base.

i) a spontaneous process is one in which the entropy of the universe increases.

j) The free energy represents the maximum amount of work that can be extracted from the system.

k) A solid tends to have more entropy than a liquid of the small composition.

l) A larger molecule tends to have more entropy than a smaller one.

m) A half-cell with a positive reduction potential is capable of oxidizing the hydrogen gas of a standard hydrogen electrode.

n) a hydrogen fuel cell produces electricity from the oxidation of hydrogen into water.

o) The voltage of an alkaline battery depends on the amount of reducing and oxidizing substances it contains.

a.)True

b.)True

c.)False

d.)True

e.)False

f.)True

g.)False

h.)True

i.)False

j.)True

k.)False

l.)False

m.)True

n.)true

o.)True

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