Q.1
Which of these compounds has the largest M ?
  • NaCl
  • LiCl
  • KCl
  • RbCl
Q.2
The M of aluminium nitrate, Al(NO ) is… (Ar: N - 14, O - 16, Al - 27)
  • 89
  • 151
  • 213
  • 275
Q.3
Which of these reactions has an atom economy of 100%?
  • C2H4 + Br2 → C2H4Br2
  • CaCO3 → CaO + CO2
  • CaCO3 + HCl → CaCl2 + H2O + CO2
  • NaOH + HCl → NaCl + H2O
Q.4
In the following reaction, if I fully react 400cm of methane, what volume of carbon dioxide should I expect to make? CH + 2 O → CO + 2 H O
  • 100 cm3
  • 200 cm3
  • 300 cm3
  • 400 cm3
Q.5
I make a solution of sodium hydroxide, NaOH, which has a concentration of 0.2 mol/dm . What is its concentration in g/dm ? A : Na: 23; O: 16; H: 1
  • 200 g/dm3
  • 40 g/dm3
  • 8 g/dm3
  • 0.2 g/dm3
Q.6
In the following reaction, if I fully react 4g of methane, what mass of water should I expect to make? CH + 2 O → CO + 2 H O
  • 1g
  • 4.5g
  • 9g
  • 18g
Q.7
In a titration I use 25cm of 0.20 mol/dm sodium hydroxide solution and find that it is neutralised by exactly 21cm of hydrochloric acid. What is the concentration of the hydrochloric acid solution? HCl + NaOH → NaCl + H O
  • 9.5 mol/dm3
  • 0.24 mol/dm3
  • 0.19 mol/dm3
  • 0.00024 mol/dm3
Q.8
I make some ethyl ethanoate by reacting ethanol and ethanoic acid. Before carrying out the reaction I have calculated that I should be able to make 3.2g of my product. However, on weighing my purified product I find that I only have 1.8g. What is the percentage yield for my reaction?
  • 5.76%
  • 50.00%
  • 56.25%
  • 177.78%
Q.9
I dissolve 10g of NaOH in 100 cm of water. Which row shows the correct concentration in both g/dm and mol/dm ?
  • 100 g/dm3; 2.5 mol/dm3
  • 1 g/dm3; 0.025 mol/dm3
  • 100 g/dm3; 0.4 mol/dm3
  • 1 g/dm3; 4 mol/dm3
Q.10
I have 2 dm of carbon dioxide gas at room temperature and pressure. How many moles do I have?
  • 88.0
  • 12.0
  • 0.045
  • 0.083
0 h : 0 m : 1 s