Using the following data reactions: $\Delta$ H° (kJ)
H₂(g) + Cl₂(g) $\rightarrow$ 2HCl(g)
-184
H₂(g) $\rightarrow$ 2H(g)
432
Cl₂(g) $\rightarrow$ 2Cl(g)
239
Calculate the energy of an H-Cl bond.

Question

Using the following data reactions:

\Delta

H° (kJ)
H₂(g) + Cl₂(g)

\rightarrow

2HCl(g)
-184
H₂(g)

\rightarrow

2H(g)
432
Cl₂(g)

\rightarrow

2Cl(g)
239
Calculate the energy of an H-Cl bond.

Quizplus · Accepted Answer

The energy of an H-Cl bond can be calculated using the reaction enthalpies. The formation of 2 HCl from H2 and Cl2 releases 184 kJ. The dissociation of H2 and Cl2 into atoms requires 432 kJ and 239 kJ, respectively. The bond energy of H-Cl is calculated as: (432 + 239 - 184) / 2 = 428 kJ/mol.

Using the Following Data Reactions Δ\DeltaΔ H° (KJ) H2(g) + Cl2(g) →\rightarrow→

Using the Following Data Reactions $\Delta$ H° (KJ)
H₂(g) + Cl₂(g) $\rightarrow$