Hydrogen reacts with chlorine to produce hydrogen chloride.
H2(g)+Cl2(g)→2HCl(g) \text{H}_2(\text{g}) + \text{Cl}_2(\text{g}) \rightarrow 2\text{HCl}(\text{g}) H2(g)+Cl2(g)→2HCl(g)Table 1 shows the bond energies for the bonds involved in this reaction.
Table 1
| Bond | Bond energy in kJ/mol\text{kJ/mol}kJ/mol |
|---|---|
| H−H\text{H}-\text{H}H−H | 436 |
| Cl−Cl\text{Cl}-\text{Cl}Cl−Cl | 243 |
| H−Cl\text{H}-\text{Cl}H−Cl | 432 |
Calculate the overall energy change for this reaction.
