Chapter 10

KOH is a strong base.

• 
  True

• False

Solution A has a 𝑝H of 4.2 and solution B has a 𝑝H of 6.6.

Which solution is more acidic?

• Solution AA is more acidic.

• Solution BB is more acidic.

Which of the following is a buffer system?

• HCl(aq) and NaOH(aq)

• H₂CO₃(aq) and KHCO₃(aq)

• NaCl(aq) and NaNO₃(aq)

• H₂O(l) and HCl(aq)

• NaCl(aq) and NaOH(aq)

Which one of the following is characteristic of a base?

• produces H₃O⁺ in water

• has a sour taste

• is insoluble in water

• has a slippery, soapy feel

• 
  turns blue litmus red

An aqueous solution with [ OH^- ] = 1.0 × 10^-12 has a pH of 12.0.

• True

• False

Write the formula of the conjugate base for H2S

Write the formula of the conjugate base for H3PO4

Which is the weaker acid?

• H2S
  

• H3PO4H3PO4

The correct formula for sulfuric acid is ________.

• H₂SO₄^-

• H₂SO₄

• SO₄^2-

• H₂SO₃^-

• H₂SO₃

Which of the following represent a buffer system?

• KOH and KCl
  

• H2CO3 and NaHCO3
  

• HF and KF
  

• KCl and NaCl