topic13 - XIII. Kinetics 1. For the reaction whose rate law...

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XIII. Kinetics 1. For the reaction whose rate law is given below, a plot of which of the following is a straight line? Rate=k[X] (A) [X] versus time (B) ln[X] versus time (C) 1/[X] versus time (D) [X] versus 1/time (E) ln[X] versus 1/time Answer: B 2. For the reaction represent below, the experimental rate law is given as follows: (CH 3 ) 3 CCl ( aq ) + OH - (CH 3 ) 3 COH ( aq ) + Cl - Rate=k[(CH 3 ) 3 CCl] If some solid sodium hydroxide is added to a solution that is 0.010-molar in (CH 3 ) 3 CCl and 0.1-molar in NaOH, which of the following is true? (Assume the temperature and volume remain constant.) (A) Both the reaction rate and k increase (B) Both the reaction rate and k decrease (C) Both the reaction rate and k remain the same (D) The reaction rate increases but k remains the same (E) The reaction rate decreases but k remains the same Answer: C 3. The specific rate constant k for a radioactive element X is 0.023 min -1 . What weight of X was originally present in a sample if 40 grams is left after 60 minutes? (A) 10 grams (B) 20 grams (C) 80 grams (D) 120 grams (E) 160 grams Answer: E 4. Relatively slow rates of chemical reaction are associated with which of the following? (A) Presence of a catalyst (B) High temperature (C) High concentration of reactants (D) Strong bonds in reactant molecules (E) Low activation energy Answer: D 5. Step 1: Ce 4+ + Mn 2+ Ce 3+ + Mn 3+ Step 2: Ce 4+ + Mn 3+ Ce 3+ + Mn 4+ Step 3: Mn 4+ + TI + TI 3+ + Mn 2+ The proposed steps for a catalyzed reaction between Ce
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topic13 - XIII. Kinetics 1. For the reaction whose rate law...

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