Acid and Base Quiz Review

Bases have a pH of

• 7

• Less than 7

• More than 7

A sour taste is a characteristic of:

• acid

• base

• neutral

• pH scale

Your teacher tells you that a substance is acidic. This means the pH will be...

• More than 7

• 7 exactly

• Less than 7

• Higher than 14

Pure water has a pH of 7. Pure water _______.

• is a base

• is a neutral substance

• could be either an acid or a base

• is an acid

If a solution is basic which ion will be more present?

• H+

• K+

• OH-

• H-

The table shows the pH of several solutions. Which solution has the greatest concentration (amount) of H⁺ ions?

• vinegar

• milk

• water

• bleach

Answer explanation

Remember H⁺ is another name for an acid. So, another way to ask this would be; which of these is the strongest acid?

Match these

• 6.7 milk

• slightly acidic

• 7.35 human blood

• slightly basic (alkaline)

• 3.3 mountain dew

• strongly acidic

• 13 ammonia

• strongly basic (alkaline)

For a solution, pH + pOH =

• 7

• 14

• 1.0 x 10^-14

• -log (1.0 x 10 ^-14)

If the pH of a solution is 4.0, what is the pOH?

• 4.0

• 10.0

• 1.0 x 10 ^-4

• cannot be determined from the information

The pH of a solution is 8.43. What is the [H⁺]concentration?

• 3.7 x 10 ^-9

• 1.0 x 10^-8.43

• 2.7 x 10^-6

• 1.0 x 10^-14