Acids, Bases, Salts and pH Calculations

Which of the following values would represent the pH of a strong base?

• 1

• 8

• 7

• 13

Which of the following values would represent the pH of a strong acid?

• 1

• 6

• 7

• 13

What range of values on the pH scale represent solutions with a higher ratio of hydronium (H₃O⁺) ions?

• 0-14

• below 7

• 7

• above 7

What range of values on the pH scale represent solutions with a higher ratio of hydroxide (OH^-) ions?

• below 7

• 7

• above 7

• 0-14

When found in food, acids often taste ________.

• Sour

• Bitter

• Salty

• Slippery

When found in food, bases often taste _______.

• Sour

• Bitter

• Salty

• Soggy

When you place blue litmus paper into an unknown clear solution, the blue litmus paper turns red.

Which of the following represents the most logical conclusion?

• The substance has a pH value of "2".

• The substance is a base.

• The substance has a pH value of "7".

• The substance is acidic.

Ocean water has a pH value near "8". It would be classified as...

• slightly acidic

• a strong base

• a neutral substance

• slightly basic (alkaline)

Four solutions are tested and found to have the following pH values. Which of these substances would be considered the weakest acid?

• Lemon Juice - pH=2

• Apple Juice - pH=4.5

• Shower Cleaner - pH=5.5

• Hydrogen Peroxide - pH=7

Many cleaning solutions are bases. Which of the following is a common property among basic solutions?

• slippery feel

• white color

• salty taste

• sour taste