Exam 3 Chemistry

Calculate the [OH – ] in a solution that has a pH of 3.63.

• 4.3x10^-11 M

• a

• b

• c

A solution has a pH of 3.99. The pOH of this solution is

• 10.01

• a

• b

• c

A solution has [H + ] = 5.0 × 10^-8 M. The pH of this solution is

• 7.30

• b

• c

• a

What is the pH of a solution that has [OH – ] = 6.9x10^-12

• 2.84

• a

• b

• c

Calculate the [H + ] in a solution that has a pH of 10.36.

• 4.4x10¹¹ M

• a

• b

• c

Calculate the pH of 5.9x10^-4 M HCl.

• 3.23

• a

• b

• c

True or false? A solution is buffered by the presence of a weak acid and its conjugate base.

• True

• a

Which of the following is true of a buffered solution?

• All of these are true

• a

• b

• c

A solution has [H + ] = 4.0 ×10^-3 M. The [OH – ] in this solution is

• 2.5x10^-12 M

• a

• b

• c

True or false? Arrhenius postulated that acids produce hydrogen ions in aqueous solution, whereas bases produce hydroxide ions.

• True

• a