AP Chemistry Titration

Which row correctly describes moldm⁻³ NaOH(aq)?

• A

• B

• C

• D

Tags

NGSS.HS-PS2-5

Consider the equilibrium below. CH₃CH₂COOH(aq) + H₂O(l) ⇌ CH₃CH₂COO⁻(aq) + H₃O⁺(aq) Which species represent a conjugate acid-base pair?

• CH₃CH₂COOH and H₂O

• H₂O and CH₃CH₂COO⁻

• H₃O⁺ and H₂O

• CH₃CH₂COO⁻ and H₃O⁺

10.0 cm³ of a solution of a strong acid with a pH of 3 is added to a volumetric flask and the total volume is made up to 1.00 dm³ by adding distilled water. The resulting solution is then thoroughly mixed.

What is the pH of the diluted solution?

• 1

• 2

• 4

• 5

A solution of 50 cm³ hydrochloric acid has a pH of 4. What is the final pH if 450 cm³ of water is added?

• 3

• 4

• 5

• 6

Tags

NGSS.MS-PS1-2

A solution of acid HX has a pH = 1 and a solution of acid HY has a pH = 3. Which statement must be correct?

• HX is a stronger acid than HY.

• HY is a stronger acid than HX.

• The [H+] in the solution of HY is 100 times greater than the [H+] in the solution of HX.

• The [H+] in the solution of HY is 100 times greater than the [H+] in the solution of HX.

What is the pH of the solution formed when 10 cm³ of HCl (aq) with pH 1.0 is added to 990 cm³ of water?

• 1.5

• 2.0

• 2.5

• 3.0

The pH of a solution changes from pH=2 to pH=5. What happens to the concentration of the hydrogen ions during this pH change?

• It decreases by a factor of 1000

• It increases by a factor of 1000

• It decreases by a factor of 100

• It increases by a factor of 100

An example of a strong acid solution is perchloric acid, HClO₄, in water. Which statement is correct for this solution?

• HClO₄ is completely dissociated in the solution.

• HClO₄ exists mainly as molecules in the solution.

• The solution reacts only with strong bases.

• The solution has a pH value greater than 7.

Which statement is correct?

• A strong acid is a good proton donor and has a strong conjugate base.

• A weak acid is a poor proton acceptor and has a strong conjugate base.

• A strong acid is a good proton donor and has a weak conjugate base.

• A strong base is a good proton donor and has a weak conjugate acid.

Which 1.0 moldm^–3 solution has the highest pH?

• Ammonium chloride

• Sulfuric acid

• Sodium chloride

• Ammonia