The number of reacting molecules which changes their concentration in a chemical change is called:
Correct answer: B. Order of a reaction
- A. Extent of a reaction
- B. Order of a reaction
- C. Specific rate of a reaction
- D. Enthalpy of reaction
Explanation
The Order of reaction refers to the relationship between the rate of a chemical reaction and the concentration of the species taking part in it. In order to obtain the reaction order, the rate expression (or the rate equation) of the reaction in question must be obtained.
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About Order of Reaction
Reaction order shows how the rate depends on the concentration of each reactant, as expressed in the rate law. Coverage includes zero, first and second-order reactions, integrated rate equations, half-life, units of rate constants and the distinction between overall order and molecularity.
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