CHEMISTRY COMMUNITY

An Dang 3F

Le Chatliers' Principle is the idea that a chemical reaction will adjust to minimize the effects of change back to the equilibrium constant. For example, if one increases the pressure of the reaction then the volume will decrease and the reaction will move in the direction where there are fewer mole...

An Dang 3F

Can someone explain to me the relationship between Bronsted acid/base and Lewis acid/base?

An Dang 3F

Yes there always has to be a sigma bond because every covalent molecule has a sigma bond while not every covalent molecule has a pi bond. Pi bonds are onl;y found in double or triplr bonds.

An Dang 3F

I think you should know it for the final. You should especially know hemoglobin, vitamin b, and myoglobin.

An Dang 3F

If there are no lone pairs on the molecule, then the molecular shape will be same as the electron arrangement. When lone pairs are present, the molecular shape of the molecule will be different from the electron arrangement. For example, h20 has four places of electron concentration, so the electron...

An Dang 3F

I read that they are the name of the same ligand.

An Dang 3F

By drawing the Lewis Structure, you will see that the most stable structure is O=Si=O. The electron arrangement and molecular shape are both linear. Since SiO2 has two places of electron concentration and no lone pairs, it is linear.

An Dang 3F

I believe you do not have to memorize all the bond angles except for the ones you have listed. Instead, you should just know if the bonds are less than a certain angle due to lone pairs.

An Dang 3F

When a molecule has a resonance structure, then it will also have delocalized electrons which are electrons that are not associated with just one atom or bond.

An Dang 3F

When determining, the vsepr of a molecule, do we have to draw the lowest energy Lewis structure of the molecule first and then determine the vsepr?

An Dang 3F

Ionic bonds can have covalent character because the cation's positive charge will attract the anion's electron, so the anion's electron cloud will be distorted towards the cation. This electron cloud distortion can be considered as a bond that acts like a covalent bond. Ionic bonds will have more co...

An Dang 3F

What exactly is an electron cloud? In an ionic compound like NaCl, will the distorted electron cloud always belong to the anion?

An Dang 3F

Cation's atomic radius is usually smaller than an anion's atomic radius because the removal of an electron will cause the effective nuclear charge to become more prominent on the other electrons while the addition of an electron will cause an increase in valence electrons and have more repulsive for...

An Dang 3F

When we are trying to draw Lewis Structures, why is it that the lowest ionization element goes into the center such as the Lewis structure for sulfate?

An Dang 3F

You can always derive the Rydberg Equation from E= hR/(n1)^2 - hR/(n2)^2 by dividing each side of the equation by h because the formula for frequency is E= hv.

An Dang 3F

Why is the energy most negative when it is near the nucleus? I understand that the equation E= -hR/n^2 shows that the energy will be a greater negative when n is a small number, but why is the energy negative?

An Dang 3F

The Rydberg formula is a formula to find the wavelength of an electron when it moves between different energy levels. You would use the formula v = R(1/n1^2 - 1/n2^2). n1 is 2 while n2 is 4. Since v = R(1/n1^2 - 1/n2^2), you can plug it into c=vλ, so it will look like c = R(1/n1^2 - 1/n2^2)λ. R is a...

An Dang 3F

First you want to identify what the problem is giving you. It says that the velocity of the electron is 6.61 x 105 m.s-1 and the work function is 150.6 kJ.mol-1. You need to convert 150.6 kJ.mol-1. to electrons by dividing 150.6 kJ.mol-1. by 6.022*10^23 convert the value into joules, so it would be ...

An Dang 3F

The amplitude of the wave does correlate with the amount of energy because intensity which is the brightness is the square of the amplitude. If the amplitude is high then the intensity will also be high.

An Dang 3F

The empirical formula will still be the same even if you use 02 by changing the molar mass to 32 grams and solving for the moles. Then you would divide both the Tin and the Oxygen by the lowest number, and the result will be Sn02.

CHEMISTRY COMMUNITY

Search found 20 matches

Re: Le chateliers principle

Bronsted Acid and Base vs Lewis Acid and Base

Re: Difference between Bonds [ENDORSED]

Re: Biological Compunds [ENDORSED]

Re: How to predict bond angles?

Re: Naming differences

Re: Si02 VSEPR

Re: Bond Angles

Re: Understanding Resonance Structures

lewis structure and vsepr

Re: Ionic Bonds Having Covalent Character

Poloarizability

Re: anion vs. cation [ENDORSED]

drawing Lewis structures [ENDORSED]

Re: Use of Rydberg formula [ENDORSED]

Negative Energy Near the Nucleus [ENDORSED]

Re: Question 1.15

Re: Q31 from online assessment

Re: Amplitude of the wave [ENDORSED]

Re: L #39