What is enthelpy for combustion of glucose?

[i_hate_math]

The enthalpies of formation with reference to (₂) are: ∆(Glucose)= −1,268 /, ∆(Carbon Dioxide)= −393.5 ./, ∆(water)= −285.8 /.

How do I calculate the enthalpy for the combustion of 1 mole of glucose?

I know H = U + PV and ∆H = Q + W_other, but I am confused by all the chemistry involved!

 

[mjc123]

Have you heard of Hess's law?

 

[i_hate_math]

No I haven't. This was a question in a past exam that I'm stuck on, it could be unrelated. Was I right to consider it as a purely thermodynamic (2nd year physics level) problem?

 

[DrClaude]

This should be posted in a homework forum with an attempt at a solution.

Thread closed.