Search found 9 matches

by Sara Kashani 4j
Tue Jan 19, 2016 9:00 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Review
Replies: 2
Views: 413

Re: Review

I normally go through the course reader for reviewing the material. I think it has almost everything that we need to know.
by Sara Kashani 4j
Mon Nov 16, 2015 7:35 pm
Forum: Administrative Questions and Class Announcements
Topic: Enrolling in 14BL
Replies: 1
Views: 708

Enrolling in 14BL

Can I enroll in 14B lab in my first pass and 14B lecture during my second pass or do I have to enroll in 14B lecture first???
by Sara Kashani 4j
Fri Nov 13, 2015 11:18 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Approximating
Replies: 1
Views: 295

Re: Approximating

In order to be able to approximate X to 0, Kc should be smaller or equal to 10^-5
by Sara Kashani 4j
Fri Nov 13, 2015 11:15 am
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: SOLIDS and LIQUIDS omission
Replies: 1
Views: 3030

Re: SOLIDS and LIQUIDS omission

No you do not include the concentration of solids and liquids when calculating the equilibrium constant. So in this case, in the ice table you should only include the concentrations of H2 and AsH3.
by Sara Kashani 4j
Fri Nov 13, 2015 11:12 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Setting X as 0 when calculating equilibrium conc.
Replies: 1
Views: 250

Re: Setting X as 0 when calculating equilibrium conc.

when K is 10^-5 or smaller we can approximate X to be 0
by Sara Kashani 4j
Fri Nov 13, 2015 11:05 am
Forum: Ideal Gases
Topic: Units for Pressure
Replies: 41
Views: 817

Re: Units for Pressure

For idea gas law, the unit of pressure must be in atm.
by Sara Kashani 4j
Sun Nov 08, 2015 10:09 am
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Why H2O always monodentate?
Replies: 2
Views: 340

Re: Why H2O always monodentate?

So both lone pairs in H2O are on oxygen atom which means there is only one binding site with the central atom. This makes H2O monodentate.
by Sara Kashani 4j
Sat Nov 07, 2015 5:43 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Coordination and Naming
Replies: 1
Views: 226

Re: Coordination and Naming

So polydentate is a coordination compound with more than one point where a ligand can attach itself to the central atom. Example: Oxalate [O-C(=O)-C(=O)-O]2- is a polydentate ion because the molecule can attach at either oxygen at the ends of the ion.
by Sara Kashani 4j
Fri Nov 06, 2015 10:29 pm
Forum: Lewis Structures
Topic: Sulfur Dioxide Formal Charges
Replies: 3
Views: 1522

Re: Sulfur Dioxide Formal Charges

So I know that SO2 is an exception and although two double bonds is the best structure of you consider the formal charges, the more common structure in one double and one single bond!!! But since in the exam we had to show which structure is better based on the formal charges, I'm thinking that two ...

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