Question

How will you provide information regarding the reaction conditions in a chemical equation?

Answer 1

1. To bring about a chemical reaction, certain conditions are always required to be fulfilled.
2. The condition of a reaction could depend on the temperature, pH, pressure, or presence of a catalyst.
3. These reaction conditions are mentioned either above or below the arrow in a chemical equation.

For example:

1. The reaction between Nitrogen gas$\left({\mathrm{N}}_2\right)$ and Oxygen gas$\left({\mathrm{O}}_2\right)$ takes place at ${3000}^{0}C$ to form nitric oxide$\left(\mathrm{NO}\right)$.
2. The reaction can be represented as follows:

${\mathrm{N}}_2\left(\mathrm{g}\right)+{\mathrm{O}}_2\left(\mathrm{g}\right)\stackrel{3000°\mathrm{C}}{\to }2\mathrm{NO}\left(\mathrm{g}\right)$