Search found 10 matches

by KaitlynWatkins2D
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?
by KaitlynWatkins2D
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...
by KaitlynWatkins2D
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"?
by KaitlynWatkins2D
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...
by KaitlynWatkins2D
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?
by KaitlynWatkins2D
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?
by KaitlynWatkins2D
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.
by KaitlynWatkins2D
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?
by KaitlynWatkins2D
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?
by KaitlynWatkins2D
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?

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