3 Methods

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305113590
Posts: 66
Joined: Fri Sep 28, 2018 12:28 am

3 Methods

Postby 305113590 » Sun Jan 27, 2019 11:47 am

Was there a reason to know all three methods? Why should one be used than another?

Tiffany_Cacy_3D
Posts: 70
Joined: Fri Sep 28, 2018 12:24 am

Re: 3 Methods

Postby Tiffany_Cacy_3D » Sun Jan 27, 2019 12:33 pm

Just as with any other problem it is good to have more than one way to solve it. That being said, the information you are given will dictate which one of the three options you can or cannot use. For example if you are only given the total Delta H of the reactions you would have to use the first method. If you do have enough to choose whichever one you want you can also consider the fact that the second method that we went over is not as accurate as the first method. I believe the one that is not as accurate is the bond enthalpy method.

MadelynNguyen1F
Posts: 59
Joined: Fri Apr 06, 2018 11:04 am

Re: 3 Methods

Postby MadelynNguyen1F » Sun Jan 27, 2019 1:58 pm

Yes, Dr.Lavelle mentioned that method 2, the bond enthalpy method, is the least accurate because it uses averages from many different molecules.

Margaret Akey
Posts: 80
Joined: Fri Sep 28, 2018 12:18 am

Re: 3 Methods

Postby Margaret Akey » Sun Jan 27, 2019 2:35 pm

you can predict enthalpies with different information. i.e. if you are given different information to know which method to use in order to solve for the answer..


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