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DP IB Chemistry: SL

Topic Questions

Home / IB / Chemistry: SL / DP / Topic Questions / 8. Acids & Bases / 8.2 More About Acids / Multiple Choice: Paper 1


8.2 More About Acids

Question 1

Marks: 1

Four 1.0 M solutions of HCl, NH3, NaOH and CH3COOH have been mislabelled, but a student has a pH meter to test the pH of the solutions. Arrange the solutions in order of increasing pH:

  • HCl (aq) < NH3 (aq) < NaOH (aq) < CH3COOH (aq)

  • CH3COOH (aq) < HCl (aq) < NH3 (aq) < NaOH (aq)

  • HCl (aq) < CH3COOH (aq) < NH3 (aq) < NaOH (aq)

  • NaOH (aq) < NH3 (aq) < CH3COOH (aq) < HCl (aq)

Choose your answer
  

Question 2

Marks: 1

Below are four statements about acid and bases. Which is the correct one?

  • Strong acids are good proton donors and have weak conjugate bases.

  • Strong bases are good proton donors and have weak conjugate acids.

  • Weak acids are poor proton acceptors and have strong conjugate bases.

  • Strong acids are good proton donors and have strong conjugate bases.

Choose your answer
  

Question 3

Marks: 1

Which statement is correct about the action of weak acids and their conductivity?

  • Weak acids are proton donors and their solutions are good conductors.

  • Weak acids are proton donors and their solutions are poor conductors.

  • Weak acids are proton acceptors and their solutions are good conductors.

  • Weak acids are proton acceptors and their solutions are good conductors.

Choose your answer
  

Question 4

Marks: 1

Which is the correct expression for the ionic product of water at 25 ℃ is

  • begin mathsize 16px style K subscript w equals fraction numerator left square bracket H to the power of plus right square bracket left square bracket O H to the power of minus right square bracket over denominator left square bracket H subscript 2 O right square bracket end fraction end style

  • H2O (l) ⇌ H+ (aq) + OH- (aq)

  • Kw = [H+][OH-]

  • 1 x 10-14 mol2 dm-6

Choose your answer
  

Question 5

Marks: 1

34.3 cm3 of 0.125 mol dm-3 sodium hydroxide solution reacts with 26.0 cm3 of sulfuric acid. What is the concentration of the acid?

  • begin mathsize 16px style fraction numerator 34.3 blank cross times blank 0.125 over denominator 26.0 end fraction end style

  • begin mathsize 16px style fraction numerator 2 blank cross times blank 34.3 blank cross times blank 0.125 over denominator 26.0 end fraction end style

  • fraction numerator size 16px 34.3 blank size 16px cross times blank size 16px 0.125 over denominator size 16px 2 size 16px cross times size 16px 26.0 end fraction

  • begin mathsize 16px style fraction numerator 26.0 over denominator 2 blank cross times blank 34.3 blank cross times blank 0.125 end fraction end style

Choose your answer
  

Question 6

Marks: 1

90 cm3 of water is added to 10 cm3 of sulfuric acid with a pH of 2. What is the new pH of the acid?

  • 1

  • 3

  • 5

  • 7

Choose your answer
  

Question 7

Marks: 1

Which of the following is true about weak acids?

  1. They are poor conductors of electricity
  2. They have a high pH
  3. They react with carbonates to produce carbon dioxide
  • I and II only

  • I and III only

  • II and III only

  • I, II and III

Choose your answer
  

Question 8

Marks: 1

Which is true about 1.0 mol dm-3 solutions of weak and strong acids?

  • Magnesium will react with strong acids but not weak acids

  • Fewer moles of base are needed to neutralise weak acids

  • Sodium carbonate reacts more slowly with weak acids

  • Weak acids have a lower pH than strong acids

Choose your answer
  

Question 9

Marks: 1

Four solutions, K, L, M and N have the following properties

K: pH= 8       L: [H+] = 1 x 10-3 mol dm-3 M: pH= 5    N: [H+] = 1 x 10-7 mol dm-3

What is their correct order of increasing acidity?

  • K < L < M < N

  • N < L < M < K

  • K < N < M < L

  • N < M < L < K

Choose your answer
  

Question 10

Marks: 1

Two beakers contain solutions of hydrochloric acid at pH = 2 and pH = 4. How does the concentration of hydrogen ions compare in the two beakers?

  • Twice as large

  • Half as much

  • begin mathsize 16px style 1 over 10 end style of the value

  • begin mathsize 16px style 1 over 100 end style of the value

Choose your answer