Biocjehemistry 3 (ACID AND BASES) Quiz

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

• Hydrochloric Acid

• Acetic Acid

• Phosphoric Acid

• Pyruvic Acid

What is the principal buffer in blood?

• H2PO4-/HPO42-

• H2CO3/HCO3-

• H2CO3/HCO3- and H2PO4-/HPO42-

• HCO3-

Tags

NGSS.HS-LS2-3

What is the ionization constant for a weak acid, HA, in water?

• Ka

• Kw

• Kc

• Kb

What is the primary function of a buffer solution?

• To maintain a stable pH when small amounts of acid or base are added

• To increase the pH of a solution

• To decrease the pH of a solution

• To completely neutralize any acid or base added

What is the major buffer in biological systems that regulates the pH of blood?

• H2PO4-/HPO42-

• H2CO3/HCO3-

• H2CO3/HCO3- and H2PO4-/HPO42-

• HCO3-

Tags

NGSS.HS-LS1-3

Which of the following pairs is NOT commonly involved in the buffering system of human blood?

• NH4+/NH3

• H2CO3/HCO3-

• H2PO4-/HPO42-

• HCO3-/CO2

What is the Henderson–Hasselbalch equation used for?

• To measure the temperature of a solution

• To find the volume of a weak acid

• To calculate the molarity of a strong base

• To determine the final pH of a weak acid solution

What is the inflection point in an acid-base titration?

• The point where the pH is at its maximum

• The point where enough base has been added to neutralize 50% of the acid

• The point where the titration starts

• The point where the acid is completely neutralized

Which of the following is a weak acid encountered in biological systems?

• H2SO4

• NH4+

• Pyruvic Acid

• HCl

Tags

NGSS.HS-LS2-3

What is the dissociation constant for some acids called?

• pH

• pKa

• pKw

• pKb