Chemical Kinetics

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What is Chemical Kinetics?

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Chemical Kinetics is the branch of chemistry that studies the rates of chemical reactions and the factors affecting them.

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What factors affect the rate of a chemical reaction?

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Concentration, temperature, surface area, and the presence of a catalyst.

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What is a catalyst?

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A catalyst is a substance that increases the rate of a chemical reaction without being consumed in the process.

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What does ΔH represent in a chemical reaction?

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ΔH represents the change in enthalpy, indicating whether energy is absorbed or released during a reaction.

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What is an exothermic reaction?

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An exothermic reaction is a chemical reaction that releases energy in the form of heat.

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What is an endothermic reaction?

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An endothermic reaction is a chemical reaction that absorbs energy from its surroundings.

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How does temperature affect reaction rates?

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Increasing temperature generally increases reaction rates by providing more energy to the reactants.

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What is the effect of concentration on reaction rates?

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Increasing the concentration of reactants typically increases the rate of reaction due to more frequent collisions.

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What is the role of surface area in chemical reactions?

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Increasing the surface area of reactants allows for more collisions, thus increasing the reaction rate.

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What happens to reaction rates when a catalyst is added?

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The addition of a catalyst lowers the activation energy, increasing the reaction rate.