Chapter 8.4

Question 1

pH

Answer 1

A measure of the concentration of H+(aq) ions in a solution

Question 2

Formula to calculate pH

Answer 2

pH = -log[H+(aq)]

Question 3

What does a one unit change in pH indicate in terms of H+ ion concentration?

Answer 3

H+ concentration changes tenfold

Question 4

Kw

Answer 4

The ionic product constant for water

Question 5

What is Kw?

Answer 5

The constant that shows the relationship between water with hydrogen and hydroxide ions in a solution

Question 6

Value of Kw at 298K

Answer 6

1.0 x 10^(-14)

Question 7

What is the value of Kw made up of?

Answer 7

The concentration of hydrogen ions multiplied by the concentration of hydroxide ions

Question 8

In terms of concentrations, when is a solution neutral?

Answer 8

When [H+(aq)] = [OH-(aq)]

Question 9

In terms of concentrations, when is a solution acidic?

Answer 9

When [H+(aq)] > [OH-(aq)]

Question 10

In terms of concentrations, when is a solution alkaline?

Answer 10

When [H+(aq)] < [OH-(aq)]