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Chemical Kinetics in One Shot (NCERT) Video Lecture | Chemistry Class 12 - NEET
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FAQs on Chemical Kinetics in One Shot (NCERT) Video Lecture - Chemistry Class 12 - NEET
| 1. What is chemical kinetics? |  |
Ans. Chemical kinetics is the branch of chemistry that studies the rate at which chemical reactions occur and the factors that influence these rates. It involves the measurement and analysis of reaction rates, the determination of reaction mechanisms, and the prediction of reaction outcomes.
| 2. What are the factors that affect the rate of a chemical reaction? | |
Ans. Several factors can influence the rate of a chemical reaction. These include the concentration of reactants, temperature, presence of a catalyst, surface area, and pressure (in the case of gaseous reactions). Increasing the concentration of reactants, raising the temperature, using a catalyst, increasing the surface area, or increasing the pressure (for gas-phase reactions) generally leads to an increase in the reaction rate.
| 3. How is the rate of a chemical reaction determined experimentally? | |
Ans. The rate of a chemical reaction can be determined experimentally by measuring the change in concentration of a reactant or product over time. This can be done by monitoring the reaction using various techniques, such as spectrophotometry, titration, or conductivity measurements. By analyzing the data obtained from these measurements, the rate of the reaction can be calculated.
| 4. What is the reaction rate order? | |
Ans. The reaction rate order refers to the exponent or power to which the concentration of a reactant is raised in the rate equation of a chemical reaction. It determines how the rate of the reaction is affected by changes in the concentration of the reactants. The reaction rate order can be zero, first, second, or even fractional, depending on the reaction mechanism.
| 5. How does temperature affect the rate of a chemical reaction? | |
Ans. Temperature has a significant effect on the rate of a chemical reaction. Increasing the temperature generally leads to an increase in the reaction rate. This is because at higher temperatures, the reactant particles have more kinetic energy, which results in more frequent collisions and greater collision energy. This, in turn, increases the likelihood of successful collisions and the formation of products. The relationship between temperature and reaction rate is described by the Arrhenius equation.
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Nov 21, 2024 Last updated |
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