Rate of reaction increases with temperature for?
Correct answer: A. Exothermic and endothermic reactions
- A. Exothermic and endothermic reactions
- B. Endothermic reactions
- C. Exothermic reactions
- D. None of these
Explanation
Rate of reaction generally increases for both exothermic and endothermic reactions with temperature. For exothermic reactions, as temperature increases, more reactant molecules have the necessary enegry to overcome the activation energy barrier, leading to an increase in reaction rate. For endothermic reactions, while they absorb from their surroundings, an increase in temperature still provides more molecules with the required energy, which can lead to an increase in the rate of reaction. So, in summary, an increase in temperature generally leads to an increase in the rate of reaction for both exothermic and endothermic reactions.
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About Reaction Kinetics
Reaction kinetics relates reaction rate to concentration, temperature, surface area and catalysts. Questions cover rate laws, reaction order, rate constants, activation energy and the activated complex, including how a catalyst lowers the activation energy without changing the overall energy change or equilibrium position.
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