Based on the following data, what is the I-I bond energy?
$\frac { 1 } { 2 }$ H₂(g) + $\frac { 1 } { 2 }$ I₂(g) ? HI(g) ; ?_rH° = 26.36 kJ/mol-rxn Bond
Bond Energy (kJ/mol)
H-H 435
H-I 295

Question

Based on the following data, what is the I-I bond energy?

\frac { 1 } { 2 }

H₂(g) +

\frac { 1 } { 2 }

I₂(g) ? HI(g) ; ?_rH° = 26.36 kJ/mol-rxn Bond
Bond Energy (kJ/mol)
H-H 435
H-I 295

Quizplus · Accepted Answer

The reaction is $\frac{1}{2}$ H₂ + $\frac{1}{2}$ I₂ → HI. Using bond energies: $\Delta H = \text{bonds broken} - \text{bonds formed}$. $\Delta H = \frac{1}{2}(435) + \frac{1}{2}(I-I) - 295 = 26.36$. Solving for I-I gives 208 kJ/mol.

Based on the Following Data, What Is the I-I Bond 12\frac { 1 } { 2 }21​

Based on the Following Data, What Is the I-I Bond $\frac { 1 } { 2 }$