Level Chemistry Practice
Questions (50)
CANDIDATES
NAME
INDEX
NUMBER
SECTION A 50
SECTION B 50
TOTAL 100
Physical Chemistry
1. Define the term enthalpy change of combustion.
,2. Write the equation for the first ionisation energy of sodium.
3. Explain why the second ionisation energy of magnesium is greater than the first.
4. Calculate the pH of a 0.01 mol dm⁻³ solution of HCl.
, 5. State Le Chatelier’s principle and apply it to the Haber process.
6. Draw and label a Maxwell–Boltzmann distribution curve.
7. Explain why catalysts increase the rate of reaction.
8. Calculate the equilibrium constant K_c for the reaction: N_2+3H_2⇌2NH_3 given
equilibrium concentrations.
Questions (50)
CANDIDATES
NAME
INDEX
NUMBER
SECTION A 50
SECTION B 50
TOTAL 100
Physical Chemistry
1. Define the term enthalpy change of combustion.
,2. Write the equation for the first ionisation energy of sodium.
3. Explain why the second ionisation energy of magnesium is greater than the first.
4. Calculate the pH of a 0.01 mol dm⁻³ solution of HCl.
, 5. State Le Chatelier’s principle and apply it to the Haber process.
6. Draw and label a Maxwell–Boltzmann distribution curve.
7. Explain why catalysts increase the rate of reaction.
8. Calculate the equilibrium constant K_c for the reaction: N_2+3H_2⇌2NH_3 given
equilibrium concentrations.
