### Example 8.7

Posted:

**Sat Jan 20, 2018 4:29 pm**Why is the equation to figure the change in enthalpy =(2mol)*q/n ? I understand the 2 mol comes from benzene but why do we have to do q/n?

Created by Dr. Laurence Lavelle

https://lavelle.chem.ucla.edu/forum/

https://lavelle.chem.ucla.edu/forum/viewtopic.php?f=76&t=25912

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Posted: **Sat Jan 20, 2018 4:29 pm**

Why is the equation to figure the change in enthalpy =(2mol)*q/n ? I understand the 2 mol comes from benzene but why do we have to do q/n?

Posted: **Sat Jan 20, 2018 4:42 pm**

The units for ΔH are Joules. If you are trying to find the change in enthalpy (ΔH) for 2 mol of benzene, you need to multiply by q (J) in the numerator and n (mol) in the denominator to end up with the ΔH in Joules.

I hope this answered your question!

I hope this answered your question!