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 these rates.

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Define a first order reaction.

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A first order reaction is one where the rate is directly proportional to the concentration of one reactant.

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What is the unit of the rate constant (k) for a first order reaction?

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The unit of the rate constant (k) for a first order reaction is s^-1.

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What is a second order reaction?

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A second order reaction is one where the rate is proportional to the square of the concentration of one reactant or the product of the concentrations of two reactants.

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What is the unit of the rate constant (k) for a second order reaction?

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The unit of the rate constant (k) for a second order reaction is M^-1s^-1.

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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, usually in the form of heat.

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What is an exothermic reaction?

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An exothermic reaction is a chemical reaction that releases energy to its surroundings, usually in the form of heat.

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What does the rate law express?

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The rate law expresses the relationship between the rate of a chemical reaction and the concentration of its reactants.

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What is the general form of a rate law?

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The general form of a rate law is: rate = k[A]^x[B]^y, where k is the rate constant, and x and y are the orders of the reaction with respect to reactants A and B.

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How do you determine the order of a reaction?

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The order of a reaction can be determined experimentally by analyzing how the rate changes with varying concentrations of reactants.