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 435 435 427 427 677 677 854

Answer 1

To determine the total bond energy in the products of the reaction \(H_2 + Cl_2 \rightarrow 2HCl\), we need to consider the bonds present in the products.

In the product \(HCl\), there is one H–Cl bond. Since the reaction produces 2 moles of HCl, there will be a total of 2 H–Cl bonds.

The bond energy for the H–Cl bond is given as 427 kJ/mol.

To find the total bond energy in the products (2 moles of HCl), we multiply the bond energy of H–Cl by the number of H–Cl bonds produced:

\[ \text{Total bond energy in products} = \text{Number of H–Cl bonds} \times \text{Bond energy of H–Cl} = 2 \times 427 \text{ kJ/mol} = 854 \text{ kJ/mol} \]

Thus, the total bond energy in the products of the reaction is 854 kJ/mol.