Question

How are the reactions classified on the basis of rates of reactions? Give examples.

Answer 1

Classification of reactions: On the basis of the rate of reaction, the reactions are classified as
1. Instantaneous reaction: Instantaneous reactions are responses that take place in a very short amount of time. For example, burning sodium ($\mathrm{Na}$) or other active metals.
2. Moderate reaction: Moderate responses are those that happen in a reasonable amount of time, from a few minutes to a few hours. For example, Photosynthesis in plants.
3. Slow: A slow reaction is one that occurs over a lengthy period of time, such as many years to a few years. For example, the creation of coal and petroleum.