Chemical Kinetics

Front

What is the collision theory in chemical kinetics?

Back

The collision theory states that for a reaction to occur, reactant molecules must collide with sufficient energy and the correct orientation.

Front

What is activation energy?

Back

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

Front

What letter represents the activation energy in chemical equations?

Back

C

Front

What does R=k[A]^2 indicate about the reaction order?

Back

It indicates a second-order reaction.

Front

How does crushing limestone into powder affect the speed of reaction with hydrochloric acid?

Back

The reaction speeds up because the surface area increases, allowing more collisions.

Front

What are the criteria for a successful collision according to the collision theory?

Back

1. Molecules must collide. 2. Collisions must have enough energy. 3. Molecules must have the correct orientation.

Front

What is a reaction mechanism?

Back

A reaction mechanism is a step-by-step description of the pathway taken by reactants to form products.

Front

How many steps are in a reaction mechanism if a graph indicates two distinct peaks?

Back

There are 2 steps in the reaction mechanism.

Front

What is the effect of temperature on reaction rates?

Back

Increasing temperature generally increases reaction rates by providing more energy to the molecules.

Front

What role does concentration play in chemical reactions?

Back

Higher concentration of reactants typically leads to an increased rate of reaction due to more frequent collisions.