Home » How to speed up a chemical reaction Last week we tried a simple chemical reaction to investigate alka seltzer reacting with water. The nature of the reactants Reactants are the two substances you combine to get the reaction.
Particle Size The smaller the particles the faster the reaction, this is because there is a larger surface area available to react with the other substance. Concentration The higher the concentration, the faster the reaction, this is because there is more of the reactive substance available to react. Temperature The higher the temperature the faster the reaction, this is because if you heat up a substance the particles have more energy and move around faster meaning they have more contact with the other reactive substance.
How to speed up a chemical reaction Can you guess which of these four jars contained the warmest water? Catalysts A Catalyst is a substance that speeds up a chemical reaction but is not changed itself by the reaction and can be used again. September 5, You must be logged in to post a comment. Uses of the concave mirror and the convex mirror in our daily life. Advantages and disadvantages of using robots in our life. Robot teachers uses, advantages and disadvantages. The Environment.
The positive and negative effects of cars. Motorola Moto E4 Plus review , advantages , disadvantages and specifications. Skip to content The Matter 0. Leave a Reply Cancel reply You must be logged in to post a comment. Chemical Kinetics is the study of reaction rates, how reaction rates change under varying conditions and by which mechanism the reaction proceeds.
How does temperature affect the rate of a chemical reaction? When two chemicals react, their molecules have to collide with each other with sufficient energy for the reaction to take place. This is collision theory. The two molecules will only react if they have enough energy.
By heating the mixture, you will raise the energy levels of the molecules involved in the reaction. Increasing temperature means the molecules move faster. This is kinetic theory. If your reaction is between atoms rather than molecules you just substitute "atom" for "molecule" in your explanation. How do catalysts affect the rate of a reaction?
Catalysts speed up chemical reactions. Only very minute quantities of the catalyst are required to produce a dramatic change in the rate of the reaction. For an exothermic reaction, heat is a product. Therefore, increasing the temperature will shift the equilibrium to the left, while decreasing the temperature will shift the equilibrium to the right.
A catalyst is a substance that can alter the rate of a chemical reaction. For most chemical reactions, temperature is directly proportional to… 3 Concentrate of the Reactants. The concentration of the reactants also plays an important role in…. The catalysts change the speed of the reaction but do not affect either its beginning or stopping, They are used in a few amounts which are often enough to complete the reaction, and there is no chemical changes or decrease in the mass occur to the catalyst before or after the reaction.
The smaller the particles the faster the reaction, this is because there is a larger surface area available to react with the other substance.
0コメント