Use the information in the table to answer the question.

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

427
427

435
435

854
854

677
677

Answer 1

To find the total bond energy in the products of the reaction \( H_2 + Cl_2 \rightarrow 2 HCl \), we need to consider the bonds formed in the products. The reaction produces 2 moles of \( HCl \), and since each \( HCl \) molecule contains one H–Cl bond, we can calculate the bond energy for the products.

The bond energy of the H–Cl bond is given as 427 kJ/mol. Since 2 moles of \( HCl \) are produced:

\[ \text{Total bond energy in products} = 2 \times 427 , \text{kJ/mol} = 854 , \text{kJ/mol} \]

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