Search found 25 matches

by Jordan Y4D
Sun Dec 02, 2018 4:46 pm
Forum: Lewis Acids & Bases
Topic: Weak and Strong Acids/Bases
Replies: 7
Views: 165

Re: Weak and Strong Acids/Bases

Soyoung Park 1H wrote:Do we have to memorize all the 7 strong acids for the coming up final?

It wouldn't be a bad idea, especially since it is not too difficult to know them by their names. I would guess that we will be given the molecular formulas of any substance we are given on the final, but I could be wrong.
by Jordan Y4D
Sun Dec 02, 2018 4:42 pm
Forum: Lewis Acids & Bases
Topic: Identifying Acids and Bases
Replies: 5
Views: 163

Re: Identifying Acids and Bases

The primary feature of a Bronsted base is a weakly bound H atom that can form intermolecular bonds with water.
by Jordan Y4D
Sun Dec 02, 2018 4:41 pm
Forum: Bronsted Acids & Bases
Topic: Bronsted vs. Lewis
Replies: 3
Views: 84

Re: Bronsted vs. Lewis

They are the same thing, simply using two different reactions that occur in the acid-base dichotomy. A lewis base is any species that donates an electron pair, whereas a bronsted base is any species that accepts protons. These things occur at the same time, but the bronsted definition discusses the ...
by Jordan Y4D
Sun Nov 25, 2018 7:46 pm
Forum: Hybridization
Topic: Test 3
Replies: 13
Views: 193

Re: Test 3

Yea. Everything up until thanksgiving regarding molecular shape will be on there.
by Jordan Y4D
Sun Nov 25, 2018 7:45 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Boron
Replies: 1
Views: 64

Boron

How would an atom with a deficient octet’s shape be affected by hybridization?
by Jordan Y4D
Sun Nov 25, 2018 7:44 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Jahn-Teller distortions.
Replies: 1
Views: 65

Jahn-Teller distortions.

With respect to the jahn-teller effect, how might ionizing a benzene ring warp the hexagonal structure?
by Jordan Y4D
Tue Nov 20, 2018 12:39 pm
Forum: Hybridization
Topic: Deficient Octets
Replies: 2
Views: 75

Deficient Octets

How does hybridization work for atoms that can sustain deficient octets? How does this effect aluminum and boron compounds?
by Jordan Y4D
Sun Nov 18, 2018 5:01 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: AX2E3 Shape [ENDORSED]
Replies: 2
Views: 78

Re: AX2E3 Shape [ENDORSED]

AX2E3 is like a trigonal bipyramidal shape, it has 5 regions of electron density. If you look at this shape, the easiest way to ensure you can fit 3 sets of lone pairs is to have the atoms be on the axial plane of the shape and the 3 lone pairs be at 120 degrees to each other.
by Jordan Y4D
Sun Nov 18, 2018 5:00 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Water Molecule
Replies: 3
Views: 113

Re: Water Molecule

A molecule with 4 regions of electron density, such as water, will always be tetrahedral in nature. Water has a tetrahedral shape, where 2 of the molecules are replaced with lone pairs, giving you a bent shape. The lone pairs are only next to each other because that is how the tetrahedral shape work...
by Jordan Y4D
Sun Nov 18, 2018 4:58 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Square Planar vs Tetrahedral
Replies: 8
Views: 212

Re: Square Planar vs Tetrahedral

The difference is based on the actual lewis dot structure. Square Planar is AX4E2, whereas tetrahedral is simply AX4. This is a significant difference.
by Jordan Y4D
Sun Nov 11, 2018 8:59 pm
Forum: Bond Lengths & Energies
Topic: bond energy
Replies: 4
Views: 93

Re: bond energy

Bond energy is the amount of energy needed to break a specific bond. It will be given or you could be ask how it relates to other bonds, we will not be asked to calculate it. It depend on the strength of the bond and the bond length.
by Jordan Y4D
Sun Nov 11, 2018 8:51 pm
Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
Topic: Dipole
Replies: 3
Views: 81

Re: Dipole

A dipole is a result of differing electronegativity in a covalent bond. This causes one side of the bond to be more positive and the other to be more negative due to one of the atoms wanting the electron more. This difference can interact with other molecules that have this effect and this is what i...
by Jordan Y4D
Sun Nov 11, 2018 8:44 pm
Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
Topic: Interionic/Intermolecular Forces
Replies: 3
Views: 86

Re: Interionic/Intermolecular Forces

An atom that is polar will have a dipole force that causes it to want to be near like atoms. These forces strength causes a solid of liquid to form. When there is not enough of those forces or the energy of the boiling point is put into the system, a gas will form.
by Jordan Y4D
Sun Nov 04, 2018 1:02 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Predicting polarizability and polarizing power
Replies: 5
Views: 386

Re: Predicting polarizability and polarizing power

Polarizability goes inverse along with the electron affinity of elements. If an atom can be easily polarized, it can easily lose an electron, meaning it has a low electron affinity.
by Jordan Y4D
Sun Nov 04, 2018 1:00 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Finding the lowest energy structure
Replies: 5
Views: 167

Re: Finding the lowest energy structure

Elements are the most stable when their FC is 0. You want the atoms with the highest electronegativity to have the lowest formal charge possible. Once you reach that, you want the overall FC to be as close to zero as well. This give you the lowest energy structure of a substance.
by Jordan Y4D
Sun Nov 04, 2018 12:58 pm
Forum: Ionic & Covalent Bonds
Topic: Be vs Mg
Replies: 1
Views: 53

Re: Be vs Mg

The period of the element has much more of an effect on electronegativity than the row does. If you go to enough significant figures, you will see that Beryllium has a high electronegativity than magnesium, but they're very close because of the aforementioned statement.
by Jordan Y4D
Sun Oct 28, 2018 2:47 pm
Forum: Ionic & Covalent Bonds
Topic: Chemical Bonding and Periodic Trends
Replies: 4
Views: 102

Re: Chemical Bonding and Periodic Trends

The primary trend in the periodic table that matters for bonding is the number of valence electrons. These increase as you move from left to right on the table.
by Jordan Y4D
Sun Oct 28, 2018 2:44 pm
Forum: Ionic & Covalent Bonds
Topic: Lowest Ionization Energy [ENDORSED]
Replies: 7
Views: 193

Re: Lowest Ionization Energy [ENDORSED]

Ionization energy has a trend, but there are many outliers based on electron structures.
by Jordan Y4D
Sun Oct 28, 2018 2:42 pm
Forum: Ionic & Covalent Bonds
Topic: The Stronger Bond [ENDORSED]
Replies: 3
Views: 107

Re: The Stronger Bond [ENDORSED]

It always depends on circumstances. Most chemists will say ionic bonds are stronger, but stronger covalent bonds do exist, just less frequently. In water, covalent bonds will always be stronger than ionic bonds.
by Jordan Y4D
Sun Oct 14, 2018 5:43 pm
Forum: DeBroglie Equation
Topic: Particle wave duality
Replies: 3
Views: 114

Particle wave duality

So knowing that every particle also has wave-like properties, would it be possible for a stream of oxygen molecules could also have a diffraction pattern if we measured it at a long enough distance and at a precise enough measurement?
by Jordan Y4D
Sun Oct 14, 2018 5:40 pm
Forum: Einstein Equation
Topic: Numbers to memorize [ENDORSED]
Replies: 37
Views: 966

Re: Numbers to memorize [ENDORSED]

Most of the equations and numbers should be on the formula sheet. I do remember Dr. Lavelle saying that the Ek =(½)mv^2 would not be on it, but I believe all other equations and numbers should be on there.
by Jordan Y4D
Sun Oct 14, 2018 5:36 pm
Forum: DeBroglie Equation
Topic: Angstrom?
Replies: 8
Views: 223

Re: Angstrom?

An Angstrom is a short hand way to show the approximate distance of the diameter of 1 hydrogen atom. It is used primarily to show wavelengths and intermolecular distances.
by Jordan Y4D
Sun Oct 07, 2018 1:33 pm
Forum: Properties of Light
Topic: Energy vs Intensity
Replies: 4
Views: 171

Re: Energy vs Intensity

I'm pretty sure that energy level refers to the actual amplitude of the waves whereas the intensity would be the actual amount of energy waves.
by Jordan Y4D
Sun Oct 07, 2018 1:32 pm
Forum: Properties of Light
Topic: C=Delta x V
Replies: 6
Views: 96

C=Delta x V

I'm confused on how exactly to use this equation. Does this equation consider the energy of the waves or only the frequency and wave lengths?
by Jordan Y4D
Wed Oct 03, 2018 4:10 pm
Forum: Molarity, Solutions, Dilutions
Topic: Ions in dilutions
Replies: 2
Views: 57

Ions in dilutions

In section G of the text book, there are a lot of questions regarding multiple ionic compounds that share an ion and having to solve for the molarity of the common ion. Does it matter what ion the ion we are solving for is bonded to? Sorry if this doesn't make sense :/

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