CHEM 134 final exam (Janusa, SFA)
False - answerTrue or False: At higher temperatures, the energy of activation is lower?
Cl(g) - answer(1) O3(g) + Cl(g) -> O2(g) + ClO(g)
(2) ClO(g) + O(g) -> Cl(g) + O2(g)
____________________________________
O3(g) + O(g) 2O2(g)
What is the catalyst?
ClO(g) - answer(1) O3(g) + Cl(g) -> O2(g) + ClO(g)
(2) ClO(g) + O(g) -> Cl(g) + O2(g)
____________________________________
O3(g) + O(g) 2O2(g)
What is the intermediate?
the forward and reverse reactions are occurring at equal rates and the concentration of
reactants and products are not changing - answerWhat is/are true about a reaction
mixture at equilibrium?
rate=k[R][S] - answer1) R + S -> W + T slow
2) R + T -> W fast
2R + S 2W overall
What is the rate law for the reaction?
left; more yellow - answer2CrO42-(aq, yellow) + 2 H3O+(aq) = Cr2O72-(aq, orange) +
3H2O(l)
The equilibrium mixture is yellow in color.
What direction will the equilibrium shift and what color should the mixture be after
adding NaOH(s) to the equilibrium mixture?
False - answerTrue or False: At higher temperatures, the energy of activation is lower?
Cl(g) - answer(1) O3(g) + Cl(g) -> O2(g) + ClO(g)
(2) ClO(g) + O(g) -> Cl(g) + O2(g)
____________________________________
O3(g) + O(g) 2O2(g)
What is the catalyst?
ClO(g) - answer(1) O3(g) + Cl(g) -> O2(g) + ClO(g)
(2) ClO(g) + O(g) -> Cl(g) + O2(g)
____________________________________
O3(g) + O(g) 2O2(g)
What is the intermediate?
the forward and reverse reactions are occurring at equal rates and the concentration of
reactants and products are not changing - answerWhat is/are true about a reaction
mixture at equilibrium?
rate=k[R][S] - answer1) R + S -> W + T slow
2) R + T -> W fast
2R + S 2W overall
What is the rate law for the reaction?
left; more yellow - answer2CrO42-(aq, yellow) + 2 H3O+(aq) = Cr2O72-(aq, orange) +
3H2O(l)
The equilibrium mixture is yellow in color.
What direction will the equilibrium shift and what color should the mixture be after
adding NaOH(s) to the equilibrium mixture?
