The representation of rate of reaction in terms of concentration of the reactants is known as

The correct answer is Rate expression.

Key Points

• The rate expression is a mathematical representation that relates the rate of reaction to the concentration of reactants.
• It is often written in the form: rate = k[A]^m[B]^n, where k is the rate constant, and m and n are the orders of the reaction with respect to reactants A and B, respectively.
• The exponents m and n in the rate expression indicate how the rate of reaction depends on the concentration of each reactant.
• Determining the rate expression is crucial for understanding the kinetics of a chemical reaction and predicting how changes in concentration affect the reaction rate.

Additional Information

• Order of Reaction:
  • The order of reaction with respect to a reactant is the power to which its concentration term in the rate equation is raised.
  • The overall order of reaction is the sum of the orders with respect to each reactant present in the rate expression.
• Rate Constant (k):
  • The rate constant is a proportionality constant in the rate expression that is specific to a particular reaction at a given temperature.
  • Its units vary depending on the overall order of the reaction.
• Stoichiometric Coefficient:
  • Stoichiometric coefficients are the numbers that appear before the reactants and products in a balanced chemical equation.
  • They indicate the relative amounts of each substance involved in the reaction.
• Randomness:
  • In the context of chemical reactions, randomness often refers to the entropy change associated with the reaction.
  • Entropy is a measure of the disorder or randomness in a system.