Chlorine monofluoride forms in this reaction:
Cl2+F2→2ClF\text{Cl}_2 + \text{F}_2 \rightarrow 2\text{ClF}Cl2+F2→2ClF
The overall energy change for the reaction is -106 kJ/mol.
| Bond | Bond energy in kJ/mol |
|---|---|
| Cl-Cl\text{Cl-Cl}Cl-Cl | 242 |
| F-F\text{F-F}F-F | 158 |
| Cl-F\text{Cl-F}Cl-F | xxx |
What is the bond energy of the Cl-F\text{Cl-F}Cl-F bond?
253 kJ/mol253\ \text{kJ/mol}253 kJ/mol
506 kJ/mol506\ \text{kJ/mol}506 kJ/mol
147 kJ/mol147\ \text{kJ/mol}147 kJ/mol
200 kJ/mol200\ \text{kJ/mol}200 kJ/mol
85 exam-style questions on AQA GCSE Chemistry 5.1 Exothermic and endothermic reactions, covering 5.1.1 Energy transfer during exothermic and endothermic reactions, 5.1.2 Reaction profiles, and 5.1.3 The energy change of reactions. Each one has a worked solution and a mark scheme showing where the marks go.