Acids and Bases Quiz

Which of these is a strong acid solution?

• 0.10 M HClO₃(aq)

• 0.10 M HF(aq)

• 0.010 M HBr(aq)

• 0.10 M HNO₂(aq)

• 0.10 M HClO(aq)

Which solution would have the lowest pH?

• 0.10 M NaOH(aq)

• 0.10 M HCOOH(aq)

• 0.010 M HBr(aq)

• 0.10 M HI(aq)

Which solution would have the highest pH?

• 0.10 M HF(aq)

• 0.10 M NaOH(aq)

• 0.10 M Ba(OH)₂(aq)

• 0.050 M KOH(aq)

If a solution has a [H⁺] of 1.0 x 10^-5 M, the [OH^-] is __ and the solution is __.

• 1.0 x 10^-9 M, acidic

• 1.0 x 10^-5 M, acidic

• 1.0 x 10^-9 M, basic

• 1.0 x 10^-5 M, basic

• 9.00, acidic

What is the pH of a 2.5 x 10^-5 M HBr(aq) solution?

• 4.60

• 5.00

• 2.50

• 9.40

Which statement(s) are false if two different 0.10 M weak acid solutions are compared? Select all that apply.

• They both have the same pH.

• The stronger acid has a higher % ionization.

• The stronger acid takes more NaOH to neutralize it.

• The weaker acid has a smaller K_a value.

Which of these statements are true when comparing a 0.10 M strong acid solution to a 0.10 M weak acid solution?

• The strong acid solution has a lower pH than the weak acid.

• A weaker acid has a lower pH value at the equivalence point.

• We don't use K_a values to calculate the pH for a srong acid solution.

• A buffer is formed when a strong base is added to a strong acid.

What is the pH for a 0.25 M HCOOH(aq) (K_a = 1.8 x 10^-4)?

• 0.60

• 2.18

• 4.35

• 11.82

An acidic salt usually has a _______ cation and a ________ anion.

• acidic cation, basic anion

• acidic cation, neutral anion

• basic cation, acidic anion

• neutral cation, basic anion

• neutral cation, acidic anion

Which of these would be a basic salt solution?

• NaBr(aq)

• NH₄Cl(aq)

• Ba(ClO)₂(aq)

• Ca(NO₃)₂(aq)

• FeCl₃(aq)