![]() When x+y = 0, it means the reaction is not dependent on the concentration of the reacting substances. It is usually a whole number (0, 1, 2 etc.), though it can also be fractions at times. Summation of x and y is called the order of the reaction. However, it does change with other factors like temperature and surface area. The rate constant k does not depend on the concentration of reactants A or B. The rate constant k and the exponents x and y are calculated by examining how the rate of a reaction changes with the change in concentrations of the reactants. & = molar concentration of the reactant substances A & B, The Rate law or rate equation explains how the rate of a chemical reaction is impacted by the concentration of its reactants. The reaction rate is calculated by measuring the change in the concentration of reacting substances or the products generated, over time. Normally, the rate of a chemical reaction reduces with time. On the other hand, combustion in a car engine occurs in fractions of seconds. For example, a piece of iron exposed to the atmosphere rusts over a very long period of time. ![]() Reaction rates vary across a very wide range. It is directly influenced by the decrease in concentration of a reactant in a given amount of time or the increase in the concentration of a product in a unit time. ![]() The rate of a chemical reaction is the pace at which the reaction takes place. Alternatively, it can also be defined as how much of the resulting product is produced in a given amount of time. The rate of a chemical reaction is defined as how much of the reacting substance is consumed in a given amount of time. ![]()
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