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DP IB Chemistry: HL

Topic Questions

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


8.2 More About Acids

Question 1

Marks: 1

Determine which of the following solutions would be basic at 25 °C?

Kw = 1.0 × 10−14 mol2 dm-6

  • [H+] = 1.0 × 10−2 mol dm−3

  • [OH] = 1.0 × 10−12 mol dm−3

  • solution of pH = 5.00

  • [H3O+] = 1.0 × 10−12 mol dm−3

Choose your answer
  

Question 2

Marks: 1

Calculate the pH of a solution of NaOH of concentration 0.001 mol dm-3

  • 1

  • 3

  • 11

  • 13

Choose your answer
  

Question 3

Marks: 1

Carbon dioxide reacts with water to form carbonic acid which can be represented in the following equation

CO2(g)  +  H2O(l)  ⇋  H+(aq)  +  HCO3(aq)

If the pressure is raised, what will happen to the position of equilibrium and the pH?

  • The equilibrium shifts to the right and pH increases

  • The equilibrium shifts to the right and pH decreases

  • The equilibrium shifts to the left and pH increases

  • The equilibrium shifts to the left and pH decreases

Choose your answer
  

Question 4

Marks: 1

When comparing the separate reactions of 0.5 g magnesium metal with equal volumes and concentrations of hydrochloric acid and ethanoic acid you can say that the

  • Hydrochloric acid reacts faster than ethanoic acid as its pH is higher

  • More gas is produced with hydrochloric acid than with ethanoic acid

  • An equal volume of gas is produced with both hydrochloric acid and ethanoic acid.

  • Ethanoic acid reacts more slowly than hydrochloric acid because its pH is lower 

Choose your answer
  

Question 5

Marks: 1

A beaker contains 50 cm3 of sodium hydroxide solution and its pH is measured as 11.
If 450 cm3 of water is added to the beaker, what will be the new pH of the solution?

  • 3

  • 9

  • 10

  • 11

Choose your answer
  

Question 6

Marks: 1

In the table below are the formulae of some acids and bases. Which row shows only weak acids and weak bases?

A

CH3NH2

Ba(OH)2

HCOOH

B

CH3CH2COOH

C6H5NH2

HCOOH

C

NH3

HNO3

CH3CH2COOH

D

NH3

KOH

H2CO3

    Choose your answer
      

    Question 7

    Marks: 1

    Three solutions of hydrochloric acid of different concentrations are shown below

    X.   0.100 mol dm-3

    Y.   0.001 mol dm-3

    Z.   0.010 mol dm-3

    If these solutions are arranged from lowest to highest pH, then the order is  

    • X﹤ Y Z

    • X﹤ Z Y

    • Y﹤ X Z

    • Y﹤ Z X

    Choose your answer
      

    Question 8

    Marks: 1

    Which of the following statements is correct? 

    • As temperature increases, the pH value of pure water decreases

    • As temperature decreases, the pH value of pure water decreases

    • The pH of water is unaffected by temperature 

    • Pure water is not neutral 

    Choose your answer
      

    Question 9

    Marks: 1

    Which row shows the correct properties of 0.1 mol dm-3 LiOH?

     

    pH

    Electrical conductivity

    Universal indicator colour

    A

    10

    poor

    green

    B

    13

    good

    purple

    C

    10

    poor

    red

    D

    13

    poor

    blue

      Choose your answer
        

      Question 10

      Marks: 1

      Equal volumes of hydrochloric acid of different concentrations are added to four beakers, A, B, C and D. Equal volumes of 1.0 mol dm-3 sodium hydroxide are then added to the beakers and the pH is measured.

      Beaker

      A

      B

      C

      D

      pH

      1

      5

      7

      13

      Which beaker contains the most concentrated solution of hydrochloric acid?

      • Beaker A

      • Beaker B

      • Beaker C

      • Beaker D

      Choose your answer