Explain the different factors influencing the rate of chemical reaction.
Explain the different factors influencing the rate of chemical reaction.
Different factors influencing the rate of chemical reaction are as follows:-
1.Nature of the reactant: - Magnesium ribbon reacts with both hydrochloric acid and acetic acid but the reaction is faster with hydrochloric acid than acetic acid. This is because hydrochloric acid is more reactive than acetic acid. It shows that the nature of the reactant influences the rate of the reaction.
2. Concentration of the reactants: - Granulated zinc reacts with both 1M hydrochloric acid and 2M hydrochloric acid. The rate of evolution of hydrogen gas is faster in case of 2M hydrochloric acid. This is because 2M hydrochloric acid is more concentrated than 1M hydrochloric acid. That is greater the concentration of the reactant, faster will be the rate of the reaction.
3. Surface area of the reactants: - Powdered calcium carbonate reacts more quickly with hydrochloric acid than marble chips. The reason is that powdered calcium carbonate offers a large surface area for the reaction. This shows that greater the surface area, higher is the rate of the reaction.
4. Temperature:- Calcium carbonate present in the marble chips reacts slowly with hydrochloric acid at room temperature and evolves carbon dioxide at a slower rate whereas on heating the evolution of carbon dioxide is faster. This shows that increase in temperature increases the rate of reaction.
5. Catalyst: - When potassium chlorate is heated, oxygen is evolved very slowly. Whereas after the addition of manganese dioxide to the reactant, oxygen is liberated at a faster rate. This shows that manganese dioxide acts as a catalyst and influences the rate of the reaction.
Different factors influencing the rate of chemical reaction are as follows:-
1.Nature of the reactant: - Magnesium ribbon reacts with both hydrochloric acid and acetic acid but the reaction is faster with hydrochloric acid than acetic acid. This is because hydrochloric acid is more reactive than acetic acid. It shows that the nature of the reactant influences the rate of the reaction.
2. Concentration of the reactants: - Granulated zinc reacts with both 1M hydrochloric acid and 2M hydrochloric acid. The rate of evolution of hydrogen gas is faster in case of 2M hydrochloric acid. This is because 2M hydrochloric acid is more concentrated than 1M hydrochloric acid. That is greater the concentration of the reactant, faster will be the rate of the reaction.
3. Surface area of the reactants: - Powdered calcium carbonate reacts more quickly with hydrochloric acid than marble chips. The reason is that powdered calcium carbonate offers a large surface area for the reaction. This shows that greater the surface area, higher is the rate of the reaction.
4. Temperature:- Calcium carbonate present in the marble chips reacts slowly with hydrochloric acid at room temperature and evolves carbon dioxide at a slower rate whereas on heating the evolution of carbon dioxide is faster. This shows that increase in temperature increases the rate of reaction.
5. Catalyst: - When potassium chlorate is heated, oxygen is evolved very slowly. Whereas after the addition of manganese dioxide to the reactant, oxygen is liberated at a faster rate. This shows that manganese dioxide acts as a catalyst and influences the rate of the reaction.
