Search found 19 matches
- Sun Dec 10, 2017 1:07 am
- Forum: Properties & Structures of Inorganic & Organic Bases
- Topic: OxoAcid strength
- Replies: 2
- Views: 584
Re: OxoAcid strength
The conjugate base is more stable due to resonance and electron withdrawing properties of oxygen.
- Sun Dec 10, 2017 1:04 am
- Forum: Administrative Questions and Class Announcements
- Topic: Final
- Replies: 3
- Views: 639
Re: Final
The locations are listed on his website under Final Rooms and review sessions on the right hand side.
- Sun Dec 10, 2017 1:00 am
- Forum: Quantum Numbers and The H-Atom
- Topic: How many electrons with given quantum numbers including ml
- Replies: 3
- Views: 670
Re: How many electrons with given quantum numbers including ml
I believe it will always be 2 unless a specific spin number is included or if a principle/rule is violated.
- Sun Dec 03, 2017 9:16 pm
- Forum: Non-Equilibrium Conditions & The Reaction Quotient
- Topic: Noble Gas increasing pressure
- Replies: 3
- Views: 957
Re: Noble Gas increasing pressure
The concentration of the two relevant groups (reactants and products) still remain the same before and after the addition of the inert gas, so the reaction would proceed as it would either way.
- Sun Dec 03, 2017 9:10 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Coordination Number
- Replies: 4
- Views: 617
Re: Coordination Number
Yes, it is the number of bonds attached to the central atom, but only referring to the ligands (ignore cations/anions).
- Sun Nov 26, 2017 4:54 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Polydentate ligands
- Replies: 2
- Views: 421
Re: Polydentate ligands
I believe the denticity just refers to how many times the ligand can bond to the transition metal. However, they generally do donate all of these electrons.
- Sun Nov 26, 2017 4:42 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Some clarification about ligands
- Replies: 5
- Views: 599
Re: Some clarification about ligands
Ligand refers to the atom or molecule that binds to the central metal atom. When Ammonia forms part of a coordination compound with a transition metal, such as Iron, Ammonia is considered a ligand.
- Sun Nov 19, 2017 11:57 pm
- Forum: Sigma & Pi Bonds
- Topic: double bonds
- Replies: 5
- Views: 892
Re: double bonds
The pi bond is created by the overlap between the orbitals that are brought together by the sigma bond.
- Sun Nov 19, 2017 11:56 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Lone Pairs
- Replies: 4
- Views: 476
Re: Lone Pairs
Lone pairs repel regions of electron density in different ways than bonds do in that they repel them more than bonds do, so they push out more and change the angle that would be there if it were all bonds.
- Sun Nov 12, 2017 9:20 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: Most Favorable Formal Charge
- Replies: 5
- Views: 3060
Re: Most Favorable Formal Charge
The more electronegative atom should generally have the negative charge if there is one, and the less electronegative atom should generally have the positive charge if there is one.
- Sun Nov 12, 2017 8:59 pm
- Forum: Ionic & Covalent Bonds
- Topic: Covalent Bonding: Polar and Non-polar
- Replies: 6
- Views: 1007
Re: Covalent Bonding: Polar and Non-polar
A polar bond is when the bond is not quite ionic but the difference in electronegativity is still signifucant, such as a difference of 1.0. A nonpolar bond is when the electronegativities are more similar, such as between Carbon and Hydrogen.
- Sun Nov 05, 2017 11:20 pm
- Forum: Ionic & Covalent Bonds
- Topic: Ionic Bonds Having Covalent Character
- Replies: 2
- Views: 495
Re: Ionic Bonds Having Covalent Character
All Ionic bonds have covalent character because there is still attraction between the cation and the electrons that the anion contains, which causes a 'distortion' of the electrons, which is similar to a covalent bond and creates covalent character depending on the level of distortion.
- Sun Nov 05, 2017 11:17 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: Formal Charge
- Replies: 8
- Views: 1079
Re: Formal Charge
When the formal charges are zero and the more electronegative / higher Ionization energy atoms are charged if the whole molecule has a charge.
- Sun Oct 29, 2017 2:02 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: How to find the energy lowest structure?
- Replies: 2
- Views: 703
Re: How to find the energy lowest structure?
The lowest energy structure will generally have the lowest possible formal charges and also preferably have all the atoms contain octets.
- Thu Oct 26, 2017 6:16 pm
- Forum: *Shrodinger Equation
- Topic: Electron Spin
- Replies: 6
- Views: 1114
Re: Electron Spin
Two electrons generally have to be opposite spins to be paired in an orbital. The numbers are different depending on the direction they spin (counterclockwise, clockwise)
- Sun Oct 22, 2017 5:25 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Angular Momentum Quantum Number [ENDORSED]
- Replies: 3
- Views: 607
Re: Angular Momentum Quantum Number [ENDORSED]
It determines the shape of the orbit in which the electron resides, but there is no way to determine exactly where in this orbit the electron is, rather we can predict the region it is generally restricted to.
- Sun Oct 22, 2017 5:21 pm
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: Post-Module Question #20 [ENDORSED]
- Replies: 2
- Views: 493
Re: Post-Module Question #20 [ENDORSED]
I believe that you would use the equation K = 1/2mv^2 to find kinetic energy, using delta v and the mass of an electron then multiply this by avogadro's constant.
- Thu Oct 05, 2017 8:24 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: E.15 [ENDORSED]
- Replies: 10
- Views: 1584
Re: E.15 [ENDORSED]
Are we expected to understand this concept for the upcoming test? As in sulfides, chlorides, etc.
- Thu Oct 05, 2017 8:11 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3008637
Re: Post All Chemistry Jokes Here
Technically, Alcohol is a solution