Acids and Bases

Which of these pH values represent an acid?

• 4

• 8

• 10

• 12

The higher the concentration of negative (hydroxide) ions in the solution, the stronger the base is.

• True

• False

Which of the following pH values represents a base?

• 2.1

• 4.6

• 6.8

• 8.1

Acids react with

• water to produce bases and salts
• salts to produce bases and water
• neither bases, salts nor water
• bases to produce salts and water

A substance is found to have the following characteristics:

Very bitter taste

Feels slippery to the touch

Produces OH- ions when dissolved in water

In what category would the substance be classified?

• acid

• base

• enzyme

• fatty acid

The pH of a solution is 2.0. What is the [OH^-] concentration?

• 1x10^-12M

• 12 M

• 1x10^-2M

• 2 M

What is the pH of a solution where the [H+] is 1.0 x 10^-11?

• 11

• 13

• 14

• 1

What is the pOH of a 1 x 10^-8 M solution of HNO₃?

• 8

• 6

• 7

• 9

What is the [H⁺] if the pH is 4.0?

• 1.0 x 10^-10 M

• 1.0 x 10^-4 M

• 1.0 x 10^-14 M

• 1.0 x 10^-7 M

What is the pOH of a solution that has a pH of 2?

• 10
• 12
• 14
• 1