Solutions in Chemistry

What is buffer capacity?

• The ability of a buffer to neutralize a strong acid

• The amount of acid or base that can be added to a buffer without a significant change in pH

• The pH range over which a buffer is effective

• The concentration of the buffer components

Which of the following factors affects the buffer capacity?

• Temperature of the solution

• Concentration of the buffer components

• Volume of the solution

• Color of the solution

A buffer is most effective when:

• The pH is equal to 7

• The concentrations of the acid and its conjugate base are equal

• The solution is diluted

• The solution is heated

• 9.26

• 8.74

• 10.74

• 7.00

What happens to the pH of a buffer solution when a small amount of strong acid is added?

• The pH increases significantly

• The pH decreases significantly

• The pH remains relatively constant

• The pH becomes neutral

How does a solution become supersaturated?

• dissolve lots of solute in it.

• dissolve a little solute in it. 

• dissolve more solute than you should be able to. 

• dissolve a solvent in it. 

Tags

NGSS.HS-PS1-5

This is the part of a solution that dissolves

• Solute

• Solvent

• Solution

• Mixture 

When a certain amount of solvent cannot hold any more solute it is called a ________ solution.

• Diluted

• Saturated

• unsaturated

• supersaturated

In this mixture, which of the following will be the solute?

• The water in the glass

• The glass that holds the final mixture

• The solution containing both powder and water

• The powder on the spoon

Tags

NGSS.MS-PS1-2

What does it mean to dilute a solution?

• lower the concentration of solute per solvent

• increase the concentration of solute per solvent

Tags

NGSS.HS-PS1-5