Rates of Reactions

Front

What is the rate of a reaction?

Back

The rate of a reaction is the speed at which reactants are converted into products, often measured in terms of concentration change over time.

Front

What is activation energy?

Back

Activation energy is the minimum energy required for a chemical reaction to occur.

Front

What factors affect the rate of reaction?

Back

Factors include temperature, concentration of reactants, surface area, and the presence of catalysts.

Front

How does temperature affect the rate of reaction?

Back

Increasing temperature generally increases the rate of reaction by providing more kinetic energy to the molecules, leading to more frequent and effective collisions.

Front

What is an effective collision?

Back

An effective collision occurs when molecules collide with the proper orientation and sufficient kinetic energy to result in a reaction.

Front

What is a gas syringe used for in reaction experiments?

Back

A gas syringe is used to measure the volume of gas produced in a reaction over a specific period of time.

Front

What is the formula for calculating the rate of reaction?

Back

Rate of reaction = Change in concentration / Time taken.

Front

What does it mean if a reaction mixture increases in volume?

Back

It indicates that gas is being produced or that a reaction is occurring that results in an increase in the total volume of the mixture.

Front

What is the significance of measuring the change in mass in a reaction?

Back

Measuring the change in mass can indicate the amount of reactant consumed or product formed, helping to determine the rate of reaction.

Front

What is the role of a catalyst in a chemical reaction?

Back

A catalyst speeds up a chemical reaction without being consumed in the process by lowering the activation energy required.