# Problem: Assume that the following reaction occurs at constant pressure:2 Al(s) + 3 Cl2(g) → 2 AlCl3(s)(a) If you are given ΔH for the reaction, what additional information do you need to determine ΔE for the process?(b) Which quantity is larger for this reaction?

###### FREE Expert Solution

Internal Energy:

$\overline{){\mathbf{∆}}{\mathbf{E}}{\mathbf{=}}{\mathbf{q}}{\mathbf{+}}{\mathbf{w}}}$

Recall that work (w) is given by:

$\overline{){\mathbf{w}}{\mathbf{=}}{\mathbf{-}}{\mathbf{P\Delta V}}}$

At constant P → q = ΔH (enthalpy)

91% (350 ratings) ###### Problem Details

Assume that the following reaction occurs at constant pressure:
2 Al(s) + 3 Cl2(g) → 2 AlCl3(s)

(a) If you are given ΔH for the reaction, what additional information do you need to determine ΔE for the process?

(b) Which quantity is larger for this reaction?

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Internal Energy concept. You can view video lessons to learn Internal Energy. Or if you need more Internal Energy practice, you can also practice Internal Energy practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Anagnostopoulos' class at UCF.