Reaction heat effect (3)

Five, reaction threshold temperature

The reaction threshold temperature is also called the reaction critical temperature, which is the minimum temperature value required to trigger the reaction to occur quickly and comprehensively

The reaction rate of most reactions accelerates as the temperature rises, which is reflected in the two-dimensional coordinate, and the slope (tangent) is relatively gentle, as shown in Figure 24-5

Figure 24-5 The thermal effect of most reactions

Figure 24-6 The thermal effect of a reaction with a very strict threshold temperature

For the very strict threshold temperature response in Figure 24-6, in the experiment, it usually either does not respond, or the reaction suddenly erupts when reaching a certain threshold temperature.

Mix pure hydrogen and oxygen in equal moles and let them react to form water.

Some polymerization reactions, decomposition reactions, radical-directed reactions, and fusion and fission reactions often have obvious threshold temperatures

Related Links: Reaction Heat Effect (2)