pH Scale

Which of the following substances is an example of a strong acid?

• Vinegar (acetic acid)

• b. Lemon juice (citric acid)

• Hydrochloric acid (HCl)

• Carbonic acid (H2CO3)

1. Which of the following substances is considered a weak base? a. Sodium hydroxide (NaOH) b. Ammonia (NH3) c. Potassium hydroxide (KOH) d. Calcium hydroxide (Ca(OH)2)

• 1. Sodium hydroxide (NaOH)

• 1. Ammonia (NH3)

• 1. Potassium hydroxide (KOH)

• 1. Calcium hydroxide (Ca(OH)2)

1. A solution with a pH of 5 is considered:

• 1. Neutral

• 1. Acidic

• 1. Basic

• 1. Alkaline

1. Which of the following substances is classified as a strong base?

• 1. Sodium hydroxide (NaOH)

• 1. Vinegar (acetic acid)

• 1. Lemon juice (citric acid)

• 1. Carbonic acid (H2CO3)

1. What does the pH scale measure? a. Temperature of a substance b. Concentration of hydrogen ions in a solution c. Density of a substance d. Volume of a solution

• 1. Temperature of a substance

• 1. Strength of an acid or base (Concentration of H ion)

• 1. Density of a substance

• 1. Volume of a solution

1. What does the pH scale measure?

• 1. Temperature of a substance

• 1. Concentration of hydrogen ions in a solution

• 1. Density of a substance

• 1. Volume of a solution