Which factor decreases the rate of a chemical reaction?

Which factor decreases the rate of a chemical reaction?

In general, a factor that increases the number of collisions between particles will increase the reaction rate and a factor that decreases the number of collisions between particles will decrease the chemical reaction rate.

How does an inhibitor decreases the rate of a chemical reaction?

Explanation: By definition, inhibitors slow down chemical reactions. So if you were to add an inhibitor to a reaction, you would cause the rate of reaction to decrease. These speed up chemical reactions, thus increasing the reaction rate.

What affects the rate of chemical reaction?

Reactant concentration, the physical state of the reactants, and surface area, temperature, and the presence of a catalyst are the four main factors that affect reaction rate.

How do you slow down a reaction?

To slow down a reaction, you need to do the opposite. Factors that can affect rates of reactions include surface area, temperature, concentration, and the presence of catalysts and inhibitors. Temperature – Changing the temperature of a chemical reaction also affects the reaction rate.

Why is the reaction rate faster at the beginning?

At the start of the reaction, when we first put magnesium in the hydrochloric acid, there is 100% of the magnesium to react with. As a result there will be more successful collisions between the reactant particles. The more successful collisions, the faster the reaction will be.

What is Le Chatelier’s principle GCSE?

Le Châtelier’s principle states that if a change is made to the conditions of a system at equilibrium, then the position of equilibrium moves to oppose the change in conditions. This principle can be used to predict how the position of equilibrium will change when the reaction conditions are changed.

What are the three reaction conditions that can be changed?

The equilibrium position can be changed by changing the reaction conditions through: changing the pressure. changing the concentration. changing the temperature.

How does pressure affect the rate of reaction?

Pressure. If the pressure of gaseous reactants is increased, there are more reactant particles for a given volume. There will be more collisions and so the reaction rate is increased. The higher the pressure of reactants, the faster the rate of a reaction will be.

How can you increase the yield of an exothermic reaction?

If the forward reaction that forms the product is exothermic, then a decrease in temperature will favour this reaction and the product yield will increase. Increasing the temperature will decrease the product yield. Increasing the pressure favours the side of the equilibrium with the least number of gas molecules.