NEET Exam > NEET Videos > Chemistry Class 12 > Order of a Reaction
Order of a Reaction Video Lecture | Chemistry Class 12 - NEET
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FAQs on Order of a Reaction Video Lecture - Chemistry Class 12 - NEET
| 1. What is the order of a reaction? |  |
Ans. The order of a reaction refers to the exponent to which the concentration of a reactant is raised in the rate equation. It represents how the rate of a reaction depends on the concentration of the reactants.
| 2. How is the order of a reaction determined experimentally? | |
Ans. The order of a reaction is determined experimentally by conducting a series of experiments with different initial concentrations of reactants. By measuring the rate of reaction in each experiment, the order can be deduced by analyzing how the rate changes with the changes in reactant concentrations.
| 3. Can the order of a reaction be fractional or negative? | |
Ans. No, the order of a reaction cannot be fractional or negative. It is always a whole number or zero. A fractional order would imply a non-integer exponent in the rate equation, which is not valid. Similarly, a negative order would contradict the concept of rate being proportional to reactant concentration.
| 4. How does the order of a reaction affect the rate constant? | |
Ans. The order of a reaction does not directly affect the rate constant. The rate constant (k) is determined by factors such as temperature, catalysts, and the nature of the reaction. However, the rate constant does depend on the order of the reaction indirectly, as it is derived from the experimental data and rate equation.
| 5. Can the order of a reaction change under different conditions? | |
Ans. Yes, the order of a reaction can change under different conditions. The order of a reaction is specific to the particular set of reactant concentrations and reaction conditions used in the experiment. Changing the temperature, pressure, or presence of a catalyst can alter the order of the reaction. However, the order is generally considered to be constant under specific conditions.
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Nov 22, 2024 Last updated |
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