Question

Calculate the standard enthalpy of reaction for the following reactions (blance equations).
4. C2H6(g) +O2(g) -> H2O(g) (combustion of ethane)

Answer 1

You will need to find the standard enthalpy, \(\Delta\)H\(_m\) for: (1.) ethane (2.) O\(_2\), (3.)water, and (4.)CO\(_2\). You can find those values in your chemistry book OR online here: http://en.wikipedia.org/wiki/Standard_enthalpy_change_of_formation_(data_table)

To find \(\Delta\)H\(_f\) you sum up the \(\Delta\)H\(_f\) for each. The formula is: \[\sf\color{red}{\Delta H_m = \sum \Delta H_f[product] - \sum \Delta H_f[reactants]}\]

Answer 2

AND yes, keep in mind that you have to \(\sf \color{orange}{BALANCE}\) the chemical equation first!

Answer 3

If you provide me with the \(\Delta\)H\(_f\) values for a few, I can further help, but as of now, you need to find the information yourself before we proceed.