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Assessment
What effect does increasing the concentration of reactants have on the rate of a chemical reaction?
It generally increases the rate of reaction.
It decreases the rate of reaction.
It has no effect on the rate of reaction.
It causes the reaction to reverse.
Which of the following statements about reaction rate is TRUE?
Reaction rates can be affected by temperature.
Reaction rates are independent of concentration.
A zero order reaction does not depend on the concentration of reactants.
Higher temperature always decreases reaction rates.
What is the effect of a catalyst on a chemical reaction?
It raises the activation energy of the reaction.
It increases the concentration of reactants.
It speeds up the reaction without being consumed.
It changes the products of the reaction.
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