Changes in Bond Energy Quick Check 4 of 54 of 5 Items Question Use the information in the table to answer the question. Bond Bond Energy (kJ/mol) H–Cl 427 Cl–Cl 242 H–H 435 Hydrogen and chlorine gases react to produce hydrochloric acid according to the reaction. H2 + Cl2 → 2HCl How much total bond energy, in kJ/mol, is in the products of the reaction? (1 point) Responses 854 854 435 435 427 427 677
The total bond energy in the products of the reaction can be calculated by multiplying the number of bonds formed by their respective bond energies.
In this reaction, 2 H-Cl bonds are formed.
Bond energy of H-Cl = 427 kJ/mol
Total bond energy = (number of bonds) x (bond energy)
= 2 x 427
= 854 kJ/mol
Therefore, the correct answer is 854 kJ/mol.