Indicate whether each statement is true or false. (c) Increasing the reaction temperature increases the fraction of successful collisions between reactants.

검증된 단계별 안내

Understand the concept of activation energy, which is the minimum energy that reactant molecules must possess in order to undergo a successful chemical reaction.

Recognize that at higher temperatures, the kinetic energy of the molecules increases. This means that more molecules will have energies equal to or greater than the activation energy.

Consider the Maxwell-Boltzmann distribution which shows that as temperature increases, the curve flattens and broadens, indicating that a larger fraction of molecules have higher energies.

Relate the increase in the number of molecules with sufficient energy (above the activation energy) to the likelihood of successful collisions. Successful collisions are those that result in a chemical reaction.

Conclude that increasing the reaction temperature does indeed increase the fraction of successful collisions between reactants, as more reactant molecules have the necessary energy to overcome the activation energy barrier.

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주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Collision Theory

Collision theory states that for a reaction to occur, reactant particles must collide with sufficient energy and proper orientation. The frequency and energy of these collisions are influenced by factors such as temperature, which affects the kinetic energy of the particles.

Effect of Temperature on Reaction Rate

Increasing the temperature generally increases the kinetic energy of molecules, leading to more frequent and more energetic collisions. This results in a higher fraction of collisions that have enough energy to overcome the activation energy barrier, thus increasing the reaction rate.

Activation Energy

Activation energy is the minimum energy required for a chemical reaction to occur. When temperature rises, more molecules possess energy equal to or greater than this threshold, which increases the likelihood of successful collisions and, consequently, the rate of reaction.