Delta H

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Erik Buetow 1F
Posts: 96
Joined: Fri Aug 30, 2019 12:15 am

Delta H

Postby Erik Buetow 1F » Sun Jan 26, 2020 7:32 pm

Will the delta H values always be given to us or will we need to know how to convert to find delta H separately?

Chris Tai 1B
Posts: 102
Joined: Sat Aug 24, 2019 12:16 am

Re: Delta H

Postby Chris Tai 1B » Sun Jan 26, 2020 7:41 pm

It depends on the question. If the question wants you to use deltaH to find something like temperature, deltaS (change in entropy), or deltaG (change in gibbs free energy), then it'll most likely be given to you or easily derivable. However, if the question wants you to find deltaH itself, then you'll have to use other potential givens, like deltaHvap or deltaHfus to find the total change in enthalpy.
It'd probably be best if you know how to convert to deltaH given other states like deltaG temp deltaS or deltaHvap, deltaHfus etc.

J Medina 2I
Posts: 102
Joined: Wed Sep 25, 2019 12:17 am

Re: Delta H

Postby J Medina 2I » Sun Jan 26, 2020 7:44 pm

For the methods discussed in lecture on Friday, we will need to be given multiple ΔH's so that we can add or subtract them to find out the value of the ΔH we don't know.

Omar Selim 1D
Posts: 108
Joined: Sat Jul 20, 2019 12:16 am

Re: Delta H

Postby Omar Selim 1D » Sun Jan 26, 2020 7:47 pm

All the necessary information regarding what is needed for a problem would be provided. It is best to know how to calculate Delta H in case it is one of the values unaccounted for, but otherwise, it would be provided. We are not expected to memorize any values.

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