Variation of Initial Rate with Concentration

The video tutorial explains how to determine the initial rate change when altering reactant concentrations in a rate law. It covers both an analytical and a quick method for calculating the rate change, using examples where reactant concentrations are halved or tripled. The tutorial also explores an alternative case with different concentration changes, providing a comprehensive understanding of rate law applications.

What is the initial problem posed in the video regarding the rate law?

• Determining the effect of temperature on reaction rate

• Finding the equilibrium constant

• Understanding the effect of changing reactant concentrations on initial rate

• Calculating the rate constant K

In the analytical method, what is the factor by which the rate changes when A is halved and B is tripled?

• 9/2

• 3/2

• 3

• 1/2

What is the new reaction rate when A is halved and B is tripled using the analytical method?

• 0.4455 molar per second

• 0.0990 molar per second

• 0.1980 molar per second

• 0.0743 molar per second

What is the main advantage of the quick method over the analytical method?

• It uses less mathematical calculations

• It is more suitable for complex reactions

• It is faster and simpler

• It provides a more accurate result

When using the quick method, what is the factor by which the rate changes when A is halved and B is tripled?

• 9/2

• 3/2

• 1/2

• 3

In the scenario where A is tripled and B is halved, what is the factor by which the rate changes?

• 3/4

• 9/4

• 1/4

• 3

What is the new reaction rate when A is tripled and B is halved using the quick method?

• 0.1980 molar per second

• 0.0743 molar per second

• 0.0990 molar per second

• 0.4455 molar per second