How does increasing the temperature affect a reaction?
A. An increase in temperature increases the reaction rate.
B. An increase in temperature slows down the reaction.
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C. An increase in temperature lowers the reaction's activation energy.
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D. An increase in temperature changes equilibrjum concentrations.

A. An increase in temperature increases the reaction rate.

Explanation:because of the disproportionately large increase in the number of high energy collisions. It is only these collisions (possessing at least the activation energy for the reaction) which result in a reaction.

d.) the average kinetic energy of the gas particles is greater in container b because its particles move faster.