Search found 10 matches
- Tue Mar 01, 2016 1:18 pm
- Forum: *Constitutional and Geometric Isomers (cis, Z and trans, E)
- Topic: Constitutional vs. Geometrical Isomers
- Replies: 2
- Views: 441
Re: Constitutional vs. Geometrical Isomers
I still don't understand the difference between constitutional and geometric isomers. Can someone elaborate further on this?
- Sun Feb 21, 2016 10:24 pm
- Forum: *Organic Reaction Mechanisms in General
- Topic: Organic Reaction Mechanisms: 1e- movement
- Replies: 1
- Views: 272
Organic Reaction Mechanisms: 1e- movement
So far when doing reaction mechanism problems we've only seen examples with transfers of two electrons at a time (with the complete arrow), but when will we see examples with only one electron movements (with the half arrow)? What will these problems look like and how will we know whether it's a two...
- Sun Jan 31, 2016 10:10 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Electromotive force
- Replies: 1
- Views: 218
Electromotive force
On page 48 in the course reader it says "In the limit i ---> 0, ∆Φ is called the electromotive force (emf), E, of the cell or cell potential, E." In this, what is "i"?
- Sun Jan 17, 2016 8:39 pm
- Forum: Thermodynamic Systems (Open, Closed, Isolated)
- Topic: Changing the energy of a system
- Replies: 4
- Views: 640
Changing the energy of a system
In the course reader is says the three ways of changing the energy of a system is to add or remove the amount of substance in the system, heat or cool the system, or do work on the system. It also says that the first way is for open systems and the second two ways are for closed systems. My question...
- Sun Jan 10, 2016 11:11 pm
- Forum: Phase Changes & Related Calculations
- Topic: Phase changes
- Replies: 2
- Views: 496
Phase changes
Why are phase changes (vaporization, melting, sublimation) endothermic? The definition for endothermic in the course reader says that endothermic reactions cause the surroundings to cool so how does this happen during phase changes in which the temperature stays the same?
- Sat Dec 05, 2015 3:24 pm
- Forum: Ionic & Covalent Bonds
- Topic: covalent character
- Replies: 5
- Views: 4447
Re: covalent character
This problem is in the 2013 Final (question 3C) and it says the answer AgF, but why is AgF less covalent than BeCl2?
- Sun Nov 29, 2015 10:31 pm
- Forum: Bronsted Acids & Bases
- Topic: Determining Acids and Bases
- Replies: 5
- Views: 772
Re: Determining Acids and Bases
To answer the other question, yes if the acid is not one of the strong acids we know then we can assume that it is a weak acid.
- Sun Nov 22, 2015 10:15 pm
- Forum: Bronsted Acids & Bases
- Topic: Bronsted and Lewis Acids and Bases
- Replies: 3
- Views: 663
Re: Bronsted and Lewis Acids and Bases
Okay, I know a bronsted acid is a proton donor and a bronsted base is a proton acceptor but how do you know if it accepts or donates?
- Sun Nov 15, 2015 10:09 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Chelating Ligands
- Replies: 3
- Views: 555
Re: Chelating Ligands
Okay, but what I don't understand is when you draw out the structure of the formula how exactly do you tell a ring has been made with the ligand in it?
- Fri Oct 30, 2015 9:48 am
- Forum: Bond Lengths & Energies
- Topic: Bond lengths and molecular orbital theory
- Replies: 4
- Views: 2438
Bond lengths and molecular orbital theory
I'm having trouble on a problem in the Quiz 2 preparation. It asks "Using molecular orbital theory, list the following molecules from shortest bond length to the longest bond length: B2^+ B2 B2^- B2^2-" but how do you determine that using molecular orbital theory?