Acid Base PreLab Questions

What is the term used to express the concentration of hydrogen ions in solution?

• Acid strength

• Base strength

• pH

• Electrolyte

According to the document, what happens when the concentration of OH⁻ ions is greater than the concentration of H⁺ ions?

• The substance is considered neutral

• The substance is considered acidic

• The substance is considered basic

• The pH value is exactly 7

What is the pH value of a neutral water molecule (H₂O) according to the document?

• Less than 7

• Greater than 7

• Exactly 7

• The document does not specify

What does a strong acid do in solution according to the document?

• Donates a greater number of OH⁻ ions

• Dissociates nearly 100% into its ions

• Remains in the molecular form

• Has a higher (more basic) pH

What is used to measure the pH value using a pH meter according to the document?

• A universal indicator

• A voltmeter

• A pair of ion-selective electrodes

• Litmus test paper

What is the ratio between HCl and NaOH in the neutralization reaction shown in Equation 2?

• 1:1

• 1:2

• 2:1

• 2:2

What type of acid is H2SO4 as it contains two ionizable protons to donate to a base?

• Monoprotic acid

• Diprotic acid

• Triprotic acid

• Hydrochloric acid

What are antacids used for?

• To increase stomach acidity

• To neutralize stomach acid

• To stimulate acid production

• To block acid production

What is the equivalence point in a titration?

• The point at which the indicator changes color

• The point at which the number of moles of acid equals the number of moles of base

• The point at which the reaction between acid and base stops

• The point at which the acid is completely consumed

What color does phenolphthalein turn at the end point of a titration in a base?

• Colorless

• Pink

• Yellow

• Blue