The number of reacting molecules which change 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 a chemical reaction' can be defined as the sum of the power of concentration of reactants in the rate law expression is called the order of that chemical reaction. Reactions can be a first-order reaction, second-order reaction, pseudo-first-order reaction, etc. depending on the concentration of the reactants. The order of a reaction is an experimental value. It means it is an experimentally determined parameter. It can have a fractional value as well.
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About Reaction Kinetics
Reaction kinetics relates reaction rate to concentration, temperature, surface area and catalysts. Questions cover rate laws, reaction order, rate constants, activation energy and the activated complex, including how a catalyst lowers the activation energy without changing the overall energy change or equilibrium position.
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