CHEM 134 final exam (Janusa, SFA) WITH ANSWERS

CHEM 134 final exam (Janusa, SFA) WITH
ANSWERS


True or False: At higher temperatures, the energy of activation is
lower? - CORRECT ANSWERS ✔✔False


(1) O3(g) + Cl(g) -> O2(g) + ClO(g)


(2) ClO(g) + O(g) -> Cl(g) + O2(g)


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O3(g) + O(g) 2O2(g)


What is the catalyst? - CORRECT ANSWERS ✔✔Cl(g)


(1) O3(g) + Cl(g) -> O2(g) + ClO(g)


(2) ClO(g) + O(g) -> Cl(g) + O2(g)


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, O3(g) + O(g) 2O2(g)


What is the intermediate? - CORRECT ANSWERS ✔✔ClO(g)


What is/are true about a reaction mixture at equilibrium? -
CORRECT ANSWERS ✔✔the forward and reverse reactions are
occurring at equal rates and the concentration of reactants and
products are not changing


1) R + S -> W + T slow


2) R + T -> W fast


2R + S 2W overall


What is the rate law for the reaction? - CORRECT ANSWERS
✔✔rate=k[R][S]


2CrO42-(aq, yellow) + 2 H3O+(aq) = Cr2O72-(aq, orange) +
3H2O(l)


The equilibrium mixture is yellow in color.