1. elementary reactions are simple reactions that occur in a single step, involving only two chemical species.

    elementary reactions are simple reactions that occur in a single step, involving only two chemical species.

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  2. The order rate law expression of a chemical reaction is the sum of the powers of the concentration of the reactants. The order of the reaction is represented by n. The order of the reaction can be 0, 1, 2, 3 and even a fraction.

    The order rate law expression of a chemical reaction is the sum of the powers of the concentration of the reactants. The order of the reaction is represented by n. The order of the reaction can be 0, 1, 2, 3 and even a fraction.

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  3. In a zero-order reaction, the rate of the reaction is independent of the concentration of the reactant(s). The rate equation for a zero-order reaction is expressed as Rate = k, where 'k' is the rate constant. This implies that the rate is constant over time, regardless of changes in reactant concentRead more

    In a zero-order reaction, the rate of the reaction is independent of the concentration of the reactant(s). The rate equation for a zero-order reaction is expressed as Rate = k, where ‘k’ is the rate constant. This implies that the rate is constant over time, regardless of changes in reactant concentration. An example of a zero-order reaction is the decomposition of hydrogen peroxide (H₂O₂) catalyzed by manganese dioxide (MnO₂). The rate of this reaction remains constant as the concentration of hydrogen peroxide changes, emphasizing the lack of dependence on reactant concentration in zero-order reactions.

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  4. In a first-order reaction, the rate is directly proportional to the concentration of a single reactant. The rate equation for a first-order reaction is expressed as Rate = k[A], where 'k' is the rate constant, and '[A]' represents the concentration of the reactant. This means that as the concentratiRead more

    In a first-order reaction, the rate is directly proportional to the concentration of a single reactant. The rate equation for a first-order reaction is expressed as Rate = k[A], where ‘k’ is the rate constant, and ‘[A]’ represents the concentration of the reactant. This means that as the concentration of the reactant decreases, the rate of the reaction also decreases proportionally. The half-life of a first-order reaction remains constant, and the reaction follows an exponential decay pattern. Many chemical reactions, such as radioactive decay and certain chemical decompositions, exhibit first-order kinetics.

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  5. The speed of a reaction is determined by its rate constant (k), which is specific to each reaction. In a first-order reaction, the rate is directly proportional to the concentration of the reactant, meaning that as the concentration decreases, the reaction rate decreases exponentially. Whether a firRead more

    The speed of a reaction is determined by its rate constant (k), which is specific to each reaction. In a first-order reaction, the rate is directly proportional to the concentration of the reactant, meaning that as the concentration decreases, the reaction rate decreases exponentially. Whether a first-order reaction is faster or slower depends on the specific values of the rate constant and initial concentration. Some first-order reactions may proceed rapidly initially, but as the reactant concentration decreases, the rate diminishes. The comparison of reaction speeds is better evaluated through the specific rate constant and the half-life of the reaction.

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