Factors Influencing the Rate of a Reaction – Class 12 | Chapter – 4 | Chemistry Short Notes Series PDF for NEET & JEE
Factors Influencing the Rate of a Reaction: The rate of a chemical reaction can be influenced by a variety of factors, including concentration, temperature, surface area, catalysts, pressure, and light. These factors are important to consider when designing and optimizing chemical reactions for industrial or scientific purposes.
Factors Influencing the Rate of a Reaction
The rate of a chemical reaction can be influenced by several factors, including:
- Concentration: The rate of a reaction generally increases with increasing concentrations of the reactants. This is because a higher concentration of reactants means that there are more molecules available to collide and react with each other.
- Temperature: The rate of a reaction typically increases with increasing temperature. This is because higher temperatures increase the kinetic energy of the molecules, causing them to move faster and collide more frequently, which increases the likelihood of successful collisions.
- Surface area: The rate of a reaction can be increased by increasing the surface area of the reactants. This is because a greater surface area provides more opportunity for the reactant molecules to come into contact with each other, increasing the likelihood of successful collisions.
- Catalysts: Catalysts can increase the rate of a reaction by providing an alternate pathway with lower activation energy. This lowers the energy barrier for the reaction, making it easier for the reactant molecules to transform into products.
- Pressure: The rate of a gas-phase reaction can be increased by increasing the pressure. This is because increasing pressure increases the concentration of the reactant molecules, making collisions between them more frequent.
- Light: Light can increase or decrease the rate of a reaction depending on the nature of the reactants and the wavelength of the light. For example, light can be used to initiate or accelerate certain photochemical reactions.
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