Acids & bases chapter reading 2

What is the pH of a neutral solution at 25°C?

• 0

• 7

• 14

• 1

Which of the following is a strong acid?

• Acetic acid

• Hydrochloric acid

• Citric acid

• Carbonic acid

Which of the following is a common method for measuring pH in a laboratory setting?

• Litmus paper

• pH meter

• Thermometer

• Barometer

What role does pH play in food preservation?

• High pH levels promote bacterial growth.

• Low pH levels inhibit bacterial growth.

• pH has no effect on bacterial growth.

• Only neutral pH levels inhibit bacterial growth.

Which of the following statements best describes the difference between baking soda and baking powder?

• Baking soda is acidic, while baking powder is basic.

• Baking soda requires an acid to activate, while baking powder contains an acid.

• Baking soda and baking powder are chemically identical.

• Baking powder requires an acid to activate, while baking soda contains an acid.

What is the primary acid involved in the digestion process in the human stomach?

• Sulfuric acid

• Hydrochloric acid

• Acetic acid

• Nitric acid

Which of the following is a common acid used in food preservation?

• Hydrochloric acid

• Citric acid

• Sulfuric acid

• Nitric acid

What is the effect of adding an acid to a baking soda-based dough?

• It decreases the dough's volume.

• It increases the dough's volume.

• It has no effect on the dough's volume.

• It makes the dough sour.

Describe the role of pH in the enzymatic activity during digestion.

• Enzymes are more active at high pH levels.

• Enzymes are more active at low pH levels.

• Enzymes have optimal activity at specific pH levels.

• pH has no effect on enzymatic activity.

Which of the following is a method to determine the pH of a solution?

• Using a spectrophotometer

• Using a pH meter

• Using a hygrometer

• Using a calorimeter