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Units

Posted: Sun Mar 11, 2018 2:56 pm
by RyanTran2F
When we find reaction enthalpies based on bond enthalpies, we multiply the enthalpy (kJ/mol) to break a bond by the number of bonds (mol) so why does the answer in the answer key sometimes have units as kj/mol (ex. 8.75)? Would it be acceptable if we just put units as kJ? Thanks :)

Re: Units

Posted: Sun Mar 11, 2018 3:00 pm
by Justin Chu 1G
Generally, the units are in kJ/mol. If anything, though, I think you can leave the answer in just kJ but definitely not just mol.

Re: Units

Posted: Sun Mar 11, 2018 3:12 pm
by Tiffany 1B
Hi,
I think this is bc what youre finding is delta H rxn so per mole of product or whatever youre measuring, if I remember correctly. I think they said they wouldnt mark off points for using just kJ vs kJ/mol tho.. Hope that helps.

Re: Units

Posted: Thu Mar 15, 2018 7:45 pm
by Warda Sahib 2J
The units are in KJ/mol but KJ alone should also be ok