H2+CI-> 2HCI
Bond Bond energy
H-H. 432
CI-CI. 239
H-CI. 427
What is the Bond energy of the reactants
What is the Bond energy of the products
How do you calculate the total Bond energy and what is the total Bond energy
How would you know if the reaction is endothermic or exothermic
The bond energy of the reactants can be calculated by adding the bond energies of the individual bonds broken during the reaction: H-H + Cl-Cl = 432 + 239 = 671 kJ/mol.
The bond energy of the products can be calculated by adding the bond energies of the individual bonds formed during the reaction: 2 H-Cl = 2 x 427 = 854 kJ/mol.
The total bond energy is the sum of the bond energies of the reactants and products: 671 + 854 = 1525 kJ/mol.
If the total bond energy of the products is less than the total bond energy of the reactants, the reaction is exothermic, meaning it releases heat. In this case, since the total bond energy of the products (854 kJ/mol) is less than the total bond energy of the reactants (1525 kJ/mol), the reaction H2 + Cl2 -> 2 HCl is exothermic.