Question

Effect of catalyst,temperature on rate of reaction (how and why)

Answer 1

Answer:

When solids and liquids react, increasing the surface area of the solid will increase the reaction rate. ... The reaction rate decreases with a decrease in temperature. Catalysts can lower the activation energy and increase the reaction rate without being consumed in the reaction.

Explanation:

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Answer 2

Explanation:

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Effect of temperature is,

=>According to collision theory, a chemical reaction that takes place at a higher temperature generates more energy than a reaction at a lower temperature.

=>This is because colliding particles will have the required activation energy at high temperature and more successful collisions will take place.

=>There are some reactions that are independent of temperature. Reactions without an activation barrier are examples of chemical reactions that are independent of temperature.

Effec of catalyst is,

=>A catalyst can be defined as a substance that increases the rate of the reaction without actually participating in the reaction. The definition itself describes its effect on chemical reactions.

=>The presence of a catalyst increases the speed of reaction in both forward and reverse reaction by providing an alternate pathway which has lower activation energy