Search found 14 matches

by Kevin Wright
Sat Mar 12, 2016 4:56 pm
Forum: *Alkenes
Topic: identifying functional groups
Replies: 1
Views: 318

identifying functional groups

when asked to identify all the functional groups in a molecule, do we include alkenes and methyl substituents? I've seen examples where they are included and some where they are not
by Kevin Wright
Thu Mar 10, 2016 12:48 am
Forum: *Cyclohexanes (Chair, Boat, Geometric Isomers)
Topic: cis and trans cyclohexanes
Replies: 1
Views: 211

cis and trans cyclohexanes

Is a cyclohexane cis if both substituents are equatorial/axial or if one is equatorial and the other is axial? Same question for trans
by Kevin Wright
Thu Mar 10, 2016 12:21 am
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: E in the Nernst Equation
Replies: 1
Views: 178

Re: E in the Nernst Equation

When the molarities of the products and reactants are the same. Ln(1) = 0 so it just becomes Ecell = Eo
by Kevin Wright
Thu Mar 10, 2016 12:18 am
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: What is the difference between E=Ecell - (RT/nF)lnQ and...
Replies: 1
Views: 545

Re: What is the difference between E=Ecell - (RT/nF)lnQ and.

They're the same formula just written with some of the constants multiplied out. However, note that you now take the log of Q rather than Ln Q
by Kevin Wright
Mon Feb 01, 2016 12:05 am
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: inert electrodes
Replies: 1
Views: 253

inert electrodes

Under what conditions would one include an inert electrode in an electrochemical cell
by Kevin Wright
Sun Jan 24, 2016 9:55 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Change in Gibbs Free Energy
Replies: 1
Views: 212

Change in Gibbs Free Energy

Conceptually, what does Gibbs Free Energy and a change in Gibbs Free Energy describe?
by Kevin Wright
Sun Jan 24, 2016 9:54 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: Change in entropy
Replies: 1
Views: 237

Change in entropy

Conceptually, what does entropy and a change in entropy describe?
by Kevin Wright
Sun Jan 10, 2016 1:23 pm
Forum: Calculating Work of Expansion
Topic: Reversible and irreversible process
Replies: 2
Views: 369

Reversible and irreversible process

How do you determine if a process is reversible or irreversible and when to use which equation?
by Kevin Wright
Sat Dec 05, 2015 9:14 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: strength of acids/ bases
Replies: 3
Views: 553

Re: strength of acids/ bases

It would be a good idea to memorize the common strong acids and bases since there aren't that many as well as some of the important weak ones. One trick to figuring out that an acid is weak is the presence of a carboxyl group (COOH) in a molecule. Most strong bases consist of a metal and an oxide or...
by Kevin Wright
Fri Nov 27, 2015 8:43 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Electronegativity and acid strength
Replies: 4
Views: 2563

Electronegativity and acid strength

How does the electronegativity of an atom in a molecule effect the strength of it being an acid?
by Kevin Wright
Sat Nov 07, 2015 8:58 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Equilibrium Constant vs. Equilibrium Quotient
Replies: 1
Views: 250

Re: Equilibrium Constant vs. Equilibrium Quotient

Correct, you omit the concentrations of solids and liquids when finding the equilibrium quotient
by Kevin Wright
Sat Oct 31, 2015 3:26 pm
Forum: Ionic & Covalent Bonds
Topic: Covalent Bonds
Replies: 2
Views: 376

Re: Covalent Bonds

All bonding interactions have some covalent character. The degree of how ionic vs how covalent a bond is is determined by the difference in electronegativity of the two atoms. If the difference in electronegativity between two atoms is greater than 2, then it is considered to be mainly ionic in char...
by Kevin Wright
Sat Oct 24, 2015 9:45 pm
Forum: Lewis Structures
Topic: Lewis Structure of XeO3?
Replies: 1
Views: 5673

Re: Lewis Structure of XeO3?

For the Lewis Structure of Xenon trioxide, it would be drawn with 3 double bonds and a lone pair of electrons on Xenon. Yes, the formal charge is the deciding factor for this. If they were all single bonds, it would fulfill the octet rule, but would result in a formal charge of 3+ for Xenon and 1- f...
by Kevin Wright
Sun Oct 11, 2015 4:52 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Wavefunction
Replies: 1
Views: 355

Wavefunction

I understand that the square of a wavefunction (ψ^2) when multiplied by the volume of a region is equal to the probability of a particle being found in that region. But what is the significance of the wavefunction (ψ) itself?

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