Lecture 17 Question (IMF)

Moderators: Chem_Mod, Chem_Admin

Juliet Cushing_2H
Posts: 103
Joined: Wed Sep 30, 2020 9:39 pm

Lecture 17 Question (IMF)

Postby Juliet Cushing_2H » Mon Nov 09, 2020 1:08 pm

Around minute 40 Professor Lavelle lists a bunch of examples of interactions along with the "Energy" associated with them. Would anyone be able to explain what type of energy this is? Is it different than the dissociation energy he mentioned earlier? Thanks!

Ria Nawathe 1C
Posts: 98
Joined: Wed Sep 30, 2020 9:39 pm
Been upvoted: 3 times

Re: Lecture 17 Question (IMF)

Postby Ria Nawathe 1C » Mon Nov 09, 2020 1:11 pm

I believe Professor Lavelle mentioned it's the energy per mole of the given interaction. For example, if there was 1 mole of Na+ and Cl- interactions, the amount of energy released due to the ion-ion interactions would be 250 kJ.

Evie Li_1H
Posts: 90
Joined: Wed Sep 30, 2020 9:48 pm
Been upvoted: 1 time

Re: Lecture 17 Question (IMF)

Postby Evie Li_1H » Mon Nov 09, 2020 6:54 pm

Pretty much what Ria said, the two ions Na+ and Cl- can't "sit" together (as Lavelle explained it) because they are just naturally attracted to each other. It doesn't require any energy for them to bond, which is why it's not a positive charge.

Arya Adibi 1K
Posts: 95
Joined: Wed Sep 30, 2020 9:41 pm

Re: Lecture 17 Question (IMF)

Postby Arya Adibi 1K » Wed Nov 11, 2020 11:24 am

The energy/mol is negative because it represents a force of attraction. This means that for an interaction that has -x kj/mol, it would take x kj/mol to break that interaction/force.


Return to “Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)”

Who is online

Users browsing this forum: No registered users and 1 guest