Using the following data, calculate the standard heat of formation of ICl(g) in kJ/mol. $\Delta$ H° (kJ/mol)
Cl₂(g) $\rightarrow$ 2Cl(g)
242.3
I₂ (g) $\rightarrow$ 2I(g)
151.0
ICl(g) $\rightarrow$ I(g) + Cl(g)
211.3
I₂(s) $\rightarrow$ I₂(g)
62.8

Question

Using the following data, calculate the standard heat of formation of ICl(g) in kJ/mol.

\Delta

H° (kJ/mol)
Cl₂(g)

\rightarrow

2Cl(g)
242.3
I₂ (g)

\rightarrow

2I(g)
151.0
ICl(g)

\rightarrow

I(g) + Cl(g)
211.3
I₂(s)

\rightarrow

I₂(g)
62.8

Quizplus · Accepted Answer

The standard heat of formation of ICl(g) can be calculated using Hess's Law. The reaction I2(s) + Cl2(g) → 2ICl(g) can be broken down into steps using the given data. The heat of formation is calculated as: ΔHf° = [2(211.3) - 151.0 - 242.3 - 62.8]/2 = 16.8 kJ/mol.

Using the Following Data, Calculate the Standard Heat of Formation Δ\DeltaΔ

Using the Following Data, Calculate the Standard Heat of Formation $\Delta$