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Different enthalpy calculation methods

Posted: Sun Jan 27, 2019 11:20 pm
by 105169446
Are there specific cases in which we should use one of the three methods over the others to calculate delta H?

Re: Different enthalpy calculation methods

Posted: Mon Jan 28, 2019 9:55 am
by deepto_mizan1H
I think it depends on what information we are given for the calculation. If we are given something with a step by step enthalpy for each step, we could use Hess's method, but if we aren't given the enthalpies for each step of the total reaction then we might decide on using the bond enthalpies to sum it (though less accurate). We should try to do it in what would be the most accurate.

Re: Different enthalpy calculation methods

Posted: Mon Jan 28, 2019 11:08 am
by Jonny Schindler 1A
There will usually be one clear method to used based on the information provided by the problem. If Hess's method can be used, it is the most accurate method.

Re: Different enthalpy calculation methods

Posted: Tue Jan 29, 2019 10:31 am
by Angela Cong 3C
The information present in the question given will allow you to determine which method to use

Re: Different enthalpy calculation methods

Posted: Tue Jan 29, 2019 11:51 am
by daniella_knight1I
Use the information given in the problem to select the most adequate method to calculate the answer.