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Chemistry
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Which of the following statements is always true?

A Exothermic reactions have lower activation energies than endothermic reactions.

B The rate of a catalyzed reaction is independent of the concentration of the catalyst.

C The rate of a reaction depends on the concentrations of all the reactants.

D The rate constant is independent of the concentrations of the reacting species.

E The rate law can be determined from the stoichiometric equation.

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Casey Durgan
Casey DurganLv2
28 Sep 2019
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Related questions

We know that adding a catalyst to a reaction provides a lower energy pathway, allowing the reaction to proceed faster. Which of the following statements are true regarding the influence of a catalyst on equilibrium? (select all that apply)

1 Both the forward and reverse rates increase so the concentrations of reactants and products do not change
2 Reactants are favored because of the increase volume
3 The time to reach equilibrium is decreased
4 Products are favored because of the lower activation energy
5 The effect varies depending on whether the reaction is endothermic or exothermic
Is each of these statements true? (NOTE: Only one submission isallowed for this question.)

(a) The activation energy of a reaction depends on thetemperature.
true
false
(b) The initial rate of a reaction is its maximum rate.
true
false
(c) Exothermic reactions are faster than endothermic ones.
true
false
(d) If reactant molecules collide with greater energy than theactivation energy, they change into product molecules.
true
false
(e) The rate of a reaction increases as the reactionproceeds.
true
false
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