Search found 9 matches
- Mon Feb 04, 2019 3:11 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: Closed and Isolated
- Replies: 10
- Views: 743
Re: Closed and Isolated
Why would a plant be seen as an open system? Why is it not multiple closed systems? wouldn't a cell be a closed system?
- Mon Jan 21, 2019 10:30 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: pKa
- Replies: 2
- Views: 338
Re: pKa
pKA and pH tend to have different values. While pH is just a way of seeing the concentration of hydrogen by the scale of ten, pKa is a way of seeing the Ka by the scale of ten. The Ka is a number used to describe the relation between products and reactants. that is why its concentration of products ...
- Thu Jan 17, 2019 11:59 am
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Why do stronger bases have conjugate acids with larger pKa values?
- Replies: 4
- Views: 2930
Re: Why do stronger bases have conjugate acids with larger pKa values?
Stronger bases have conjugate acids that are weak. Since weak acids have large pKa values, the conjugate acid has a large pKa. This is because in the same way that the lower the pH the more acidic a substance is, the lower the pKa the more acidic it is as well.
- Tue Jan 15, 2019 3:37 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Temperature Relation
- Replies: 3
- Views: 317
Re: Temperature Relation
temperature is also related to the speed at which particles move and collide. If the object has higher temperature, the particles move faster. This means more collisions therefore more reactions which completely changes the rate of reaction. K value is the equilibrium constant and is completely depe...
- Tue Jan 15, 2019 3:29 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3590830
Re: Post All Chemistry Jokes Here
I made a chemistry joke and got no reaction. :)
- Tue Jan 15, 2019 3:28 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Changes to K value
- Replies: 9
- Views: 714
Changes to K value
What factors effect the K value and which do not? (for example temperature, pressure, volume, concentration)
- Wed Jan 09, 2019 12:36 pm
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: p. 435 Gibbs Free Energy Curve
- Replies: 1
- Views: 241
Re: p. 435 Gibbs Free Energy Curve
Graph A shows the energy level of a reAction with a K value greater than 1. This means that the reaction is product favored in that more products are formed. This means that these products are more stable than the reactants and this is shown in the graph as the more stable something is, the less fre...
- Wed Jan 09, 2019 12:30 pm
- Forum: Student Social/Study Group
- Topic: New to Lavelle
- Replies: 32
- Views: 5308
Re: New to Lavelle
As someone new to Lavelle I would like to ask, how well do the lectures prepare us for the midterm and final ? Is watching the modules absolutely necessary to ace this class or do the lectures go over all the topics well enough ? Also, how rigorous are the tests (not the final and the midterm the ot...
- Wed Jan 09, 2019 12:23 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3590830
Re: Post All Chemistry Jokes Here
A neutron walks into a bar and asks “how much for a beer?” The bartender smiles and responds “ for you, no charge” :)