3.1.5 Kinetics

Consider the following equilibrium reactions. Choose the letter that corresponds to the equilibrium that best fits the information provided. You may use each letter once, more than once or not at all.

A decrease in temperature at constant pressure shifts the position of this equilibrium from right to left.

• P

• Q

• R

• S

• T

Consider the following equilibrium reactions. Choose the letter that corresponds to the equilibrium that best fits the information provided. You may use each letter once, more than once or not at all.

This equilibrium uses concentrated phosphoric acid as a catalyst in a hydration reaction.

• P

• Q

• R

• S

• T

Consider the following equilibrium reactions. Choose the letter that corresponds to the equilibrium that best fits the information provided. You may use each letter once, more than once or not at all.

A decrease in pressure at constant temperature shifts the position of this equilibrium from left to right.

• P

• Q

• R

• S

• T

Consider the following equilibrium reactions. Choose the letter that corresponds to the equilibrium that best fits the information provided. You may use each letter once, more than once or not at all.

There is no change in the position of this equilibrium when the pressure is increased at constant temperature.

• P

• Q

• R

• S

• T

Consider the following equilibrium reactions. Choose the letter that corresponds to the equilibrium that best fits the information provided. You may use each letter once, more than once or not at all.

An increase in the concentration of steam at constant temperature and constant pressure shifts the position of this equilibrium from right to left.

• P

• Q

• R

• S

• T

The Maxwell–Boltzmann distribution of molecular energies in a sample of gas at a fixed temperature is shown.

Which letter represents the mean energy of the molecules?

• A

• B

• C

• D

Tags

NGSS.HS-PS3-2

The diagram shows the Maxwell−Boltzmann distribution of molecular energies in a gas at two different temperatures.

Which letter represents the most probable energy of the molecules at the higher temperature?

• A

• B

• C

• D

Tags

NGSS.HS-PS3-4

The question below is about the Maxwell–Boltzmann distribution shown for a sample of a gas, X, at two different temperatures.

Which letter shows the mean energy of the molecules at the higher temperature?

• P

• Q

• R

• S

Tags

NGSS.HS-PS3-4

The question below is about the Maxwell–Boltzmann distribution shown for a sample of a gas, X, at two different temperatures.

Which statement is correct for the higher temperature?

• The area under the curve to the left of Ea decreases.

• The total area under the curve increases.

• The activation energy decreases.

• More molecules have the mean energy.

Tags

NGSS.HS-PS1-5

This question is about the Maxwell–Boltzmann distribution of molecular energies in a sample of a gas shown in the figure below.

Which letter best represents the mean energy of the molecules?

• A

• B

• C

• D

Tags

NGSS.HS-PS3-2