REGULAR QUIZZES - REGULAR TOPIC 13 Kinetics SET C
REGULAR Quizzes - REGULAR TOPIC 13 Kinetics SET C.
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QUESTION 1. For the chemical reaction H
2
+ Cl
2
==> 2HCl, what can be said of the relative rates of consumption of the reactants when compared to the formation of products?
(A) HCl will be produced at the same rate as chlorine is consumed
(B) HCl will be produced at half the rate chlorine is consumed
(C) HCl will be produced at twice the rate chlorine is consumed
(D) It is not possible to tell anything about relative rates of consumption and formatiom from the chemical equation
(E) None of the above
QUESTION 2. All the following statements about catalysts are true, EXCEPT;
(A) They provide a reaction pathway of lower activation energy
(B) They are the same at the end of a reactionas they are at the start of a reaction
(C) They change the value of Delta H for a reaction
(D) They increase the rate of both the forward and the backward reaction in a reversible reaction
(E) They have no effect on the amount of products formed
QUESTION 3. A first order reaction has a half-life of 120.0 days. What fraction of the reactant has been used up after 480.0 days
(A) 25.00%
(B) 75.00%
(C) 40.00%
(D) 6.250%
(E) 93.75%
QUESTION 4. In a reaction that is first order with respect to X and first order with respect to Y, which of the following changes will have NO effect overall on the rate?
(A) Doubling [X] and doubling [Y]
(B) Doubling [X]
(C) Quadrupling [Y]
(D) Halving [X] and doubling [Y]
(E) Halving [X] and halving [Y]
QUESTION 5. If the concentration of a reactant is tripled and the rate increases by a factor of nine, what is the order with respect to that reactant?
(A) 0
(B) 1
(C) 2
(D) 3
(E) 9
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