The lower the temperature in a cold reaction mixture, the slower the particles move. There would also be less collision with less energy.

The higher the temperature in a hot/warm reaction mixture, the faster the particles move. Therefore, the reaction would take less time if using heating (Bunsen burner). There would also be more collision with the greater energy.

Concentration of the dissolved reactants

The fewer particles in a given area, the less chance of collision with less energy, which makes the reaction slower. The more particles in a given area, the more chance of collision with a greater energy,

The Haber Process The Haber Process combines nitrogen from the air with hydrogen copied mainly from natural gas (methane) into ammonia. The reaction is reversible and the production of ammonia is exothermic.

· On heating strongly, the white solid ammonium chloride, decomposes into a mixture of two colourless gases ammonia and hydrogen chloride.

It is also shown by the sign a half-arrow to the right (forward reaction) and a half-arrow to the left (backward reaction). An example of a reversible reaction

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