The half-life period of a reaction

The correct answer is: (2) The half-life period of a reaction decreases with an increase in temperature.

In general, for most chemical reactions, the half-life is inversely proportional to temperature. When the temperature increases, the reaction rate typically increases, leading to a shorter half-life period. Conversely, when the temperature decreases, the reaction rate decreases, resulting in a longer half-life. This relationship is described by the Arrhenius equation, which relates the rate constant of a reaction to the temperature.