Which will increase the rate of a chemical reaction?

A. adding a positive catalyst

The real problem:

Which will increase the rate of a chemical reaction?

A. adding a positive catalyst

B. decreasing the pressure

C. decreasing the temperature

D. adding a negative catalyst

If we want to increase the rate of reaction, the factors that influence are as follows:

Thus, based on all the factors above, the right answer to the problem is adding a positive catalyst.

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Notes

The rate of a chemical reaction can be increased by the following method:

Further Explanation:

A molecule that helps in increasing the speed of chemical reaction without being a reactant is referred to as catalyst. In a biochemical reaction, enzymes act as a catalyst. Enzymes are generally proteins, although some of the ribonucleic acid molecules also act as enzymes.

The activation energy is referred to as the amount of energy essential to start the reaction. Enzymes work by the binding of reactant molecules to the substrate .and hold them in a manner that the chemical bond-forming and bond-breaking processes occur more readily. The enzymes do not affect the ΔG value ; they don’t affect the energy-absorbing or releasing energy. The reason is that they don’t change the free energy of a reactant or product. By increasing temperature, the rate of the chemical reaction increases because, due to the increase in the temperature, the average kinetic energy of the reacting molecules increases.

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Answer Details:

Grade: High School

Subject: Biology

Chapter: Chemical Kinetics

Keywords:

Reactant, product, enzyme, bond, activation energy, bond-breaking, transition state, reaction, catalyst, biochemical reaction, proteins.

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