Conjugate Acids and Bases Concepts

What is the primary characteristic of a Bronsted-Lowry acid?

• It releases electrons.

• It forms a salt.

• It donates a proton.

• It accepts a proton.

In the equilibrium of a weak acid, what does HA become after donating a proton?

• BH+

• A-

• H+

• H2O

What is the conjugate base of the acid HA?

• BH+

• A-

• H+

• H2O

Which of the following represents a base-conjugate acid pair?

• H2O and OH-

• B and BH+

• HA and A-

• H+ and H2O

How do conjugate acid-base pairs differ?

• By one oxygen atom

• By one proton

• By one electron

• By two protons

What happens when A- accepts a proton?

• It releases energy

• It becomes H2O

• It reforms HA

• It forms BH+

Which choice correctly represents an acid-conjugate base pair?

• HNO3 and H3O+

• H2PO4- and HPO4^2-

• HCl and Cl-

• H2O and H3O+

Why is choice C incorrect for identifying a conjugate acid-base pair?

• They differ by two protons.

• They differ by one oxygen atom.

• They do not differ by one proton.

• They are not in equilibrium.

What is a common mistake when identifying conjugate pairs?

• Considering only strong acids

• Focusing on electron transfer

• Ignoring the proton difference

• Confusing them with salts

Which choice is definitely incorrect for a conjugate pair?

• Two species differing by one proton

• A base and its conjugate acid

• An acid and its conjugate base

• Two oxyacids differing by one oxygen atom