Question

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

Answer 1

Answer:

With an increase in temperature, there is an increase in energy that can be converted into activation energy in a collision, and that will increase the reaction rate. ... When a catalyst is added, the activation energy is lowered because the catalyst provides a new reaction pathway with lower activation energy.

Answer 2

Explanation:

EFFECT OF CATALYST AND TEMPERATURE ON RATE OF REACTION :-

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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.