8. For any chemical, its temperature is a measure of A the average kinetic energy of the particles that react B the average kinetic energy of all the particles C the activation energy D the minimum kinetic energy required before reaction occurs. 9. Which line in the table is correct for a reaction as the temperature decreases from T2 to T1? 10. The potential energy diagram below refers to the reversible reaction involving reactants R and products P. What is the enthalpy change, in kJ mol–1, for the reverse reaction P R? A + 30 B + 10 C –10 D –40 11. When a catalyst is used, the activation energy of the forward reaction is reduced to 35 kJ mol–1. What is the activation energy of the catalysed reverse reaction? A 30 kJ mol–1 B 35 kJ mol–1 C 65 kJ mol–1 D 190 kJ mol–1 12. A reaction was carried out with and without a catalyst as shown in the energy diagram. What is the enthalpy change, in kJ mol–1, for the catalysed reaction? A–100 B –50
8. For any chemical, its temperature is a measure of A the average kinetic energy of the particles that react B the average kinetic energy of all the particles C the activation energy D the minimum kinetic energy required before reaction occurs. 9. Which line in the table is correct for a reaction as the temperature decreases from T2 to T1? 10. The potential energy diagram below refers to the reversible reaction involving reactants R and products P. What is the enthalpy change, in kJ mol–1, for the reverse reaction P R? A + 30 B + 10 C –10 D –40 11. When a catalyst is used, the activation energy of the forward reaction is reduced to 35 kJ mol–1. What is the activation energy of the catalysed reverse reaction? A 30 kJ mol–1 B 35 kJ mol–1 C 65 kJ mol–1 D 190 kJ mol–1 12. A reaction was carried out with and without a catalyst as shown in the energy diagram. What is the enthalpy change, in kJ mol–1, for the catalysed reaction? A–100 B –50
CCS%20EXAM%20QUESTIONS.docx