## Search found 9 matches

Mon Nov 28, 2016 8:55 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Replies: 3
Views: 526

In a homonuclear molecule, you would add electrons based on the Pauli Exclusion Principle as well as Hund's rule.
Mon Nov 28, 2016 8:49 pm
Forum: Calculating the pH of Salt Solutions
Topic: Homework 12.65
Replies: 5
Views: 1031

### Re: Homework 12.65

The reason it is neutral is because the salt is the product of a strong acid and a strong base and so it is a neutral salt. That is why the pH is 7.
Mon Nov 28, 2016 8:33 pm
Forum: *Making Buffers & Calculating Buffer pH (Henderson-Hasselbalch Equation)
Topic: Adding salt and no shift in equilibrium?
Replies: 2
Views: 534

### Re: Adding salt and no shift in equilibrium?

For the example on Pg 170, I believe the reason it does not happen that way is because the K value is so small that acetic acid wants to remain as such without dissociating. When we add the conjugate base by adding the salt, some of it WILL be affected by equilibrium with H+ but it is not enough to ...
Mon Nov 28, 2016 8:24 pm
Forum: Hybridization
Topic: Polar/nonpolar [ENDORSED]
Replies: 14
Views: 1627

### Re: Polar/nonpolar[ENDORSED]

Another way to look at it is if the molecule as a whole has a dipole moment. A molecule is polar if one side is more negative than the other and it is attracted to the opposite charged side of another molecule.
Sun Oct 30, 2016 2:51 pm
Forum: Quantum Numbers and The H-Atom
Topic: 2006 Practice Midterm Question #5C
Replies: 1
Views: 344

### Re: 2006 Practice Midterm Question #5C

To figure out how many orbitals there with quantum numbers n=3 and l=2, just find how many d orbitals there are specifically. Those are the number of ml values. For d orbitals, that value is 5. Hence, there are 5 orbitals with those quantum numbers.
Sat Oct 22, 2016 2:54 pm
Forum: Lewis Structures
Topic: Connectivity of Atoms from Formula
Replies: 1
Views: 357

### Re: Connectivity of Atoms from Formula

As per my experience, I've noticed that when an organic molecule is written ( and I'll use propane as an example here ) in it's molecular formula, it is usually written as C 3 H 8 . It's structural formula, however, is CH 3 CH 2 CH 3 . Usually when the molecule is written in this expanded form, it i...
Sat Oct 22, 2016 2:38 pm
Forum: Lewis Structures
Topic: Chemical bonds- Lewis structures
Replies: 1
Views: 285

### Re: Chemical bonds- Lewis structures

I think it's only in 2D as VSEPR is in Chapter 4 and our quiz is from Chapter2 - 3.
Sat Oct 08, 2016 5:12 pm
Forum: Student Social/Study Group
Topic: Hitch Study Group
Replies: 12
Views: 1368

### Re: Hitch Study Group

My roommate and I are from Hitch A and we are in the same class. I think Sunday night is fine. I propose we use the common room.
Thu Sep 29, 2016 9:48 pm
Forum: Balancing Chemical Reactions
Topic: Writing Reactions
Replies: 5
Views: 777

### Re: Writing Reactions

The way I go about it is that I memorize the ones that I find particularly confusing. There is no other roundabout way to do this I think. I can help you with the chlorate though. Stuff like chlorates usually mean that you have the maximum amount of Oxygen bound to a Chlorine atom (ClO3-). I would r...