CHEMISTRY COMMUNITY

rikolivares

This part is a little confusing for me. If, basic solutions have less H3O+ than acids, and the pH log measures the amount of H3O+, then why do the larger numbers (8-14) correspond to bases?

rikolivares

The textbook has a chart on page 724 in the 7th edition telling you the possible number of common ligands.

rikolivares

Yes, since K has a charge of 1+ it would cancel out the 3- if there was three K

rikolivares

i wasn't able to copy everything down, and Professor Lavelle didn't have any important announcements. naming coordination compounds (greek prefix) ligand names alphabetical order then tm (transition metal) cation name (roman numeral) if there are anions, then anion name (greek prefix) hydrate [Co(NH...

rikolivares

a) Hydrogen since there's H & N atoms, dipole-dipole since there's dipole moments all around, and london forces since all molecules have london forces b) london, no dipole since the Br atoms cancel the dipole moments because of the symmetry c) london, hydrogen since theres H & O atoms, dipol...

rikolivares

Can you have more than one central atom for the VSEPR formula? Such as A₂? If so, why is I₃^- not A₃ or AX₂ but X₃ instead?

rikolivares

Hello! For the exam and tests, is it better to straight up memorize the shape names or is there easy way to derive the names from the number of lone pairs and bonds?

rikolivares

When there is more than a single bond.

rikolivares

I think that when ions have the same number of electrons, you go with the atom that has the largest atomic radius as the atom with the lowest polarizability.

rikolivares

Hello, I was wondering what the difference between a "dipole-dipole" versus "dipole induced dipole" interaction was. Thank you!

rikolivares

these are some of the notes i took down! from last chapter strengths & lengths of bonds weak (longer) bonds easily broken & more likely involved in reaction strong (shorter) bonds, harder to break & less reactive strength of a bond is measured by its DISSOCIATION ENERGY (ENERGY REQUIRED ...

rikolivares

I'm assuming that because the fluctuation is so quick, the electrons are virtually everywhere at the same time and polarizing every atom. In other words, it does not matter if electron density only momentarily makes one side of the atom negative because those electrons will be back on that side in a...

rikolivares

I understand that n corresponds to the shell and l is the type of orbital but what does m_l correspond to? Is this something we will need to know? Thank you!

rikolivares

There is less electrons to share the nucleus's positive charge once one of the electrons is removed, so the remaining ones have to take on more attraction to the nucleus .

rikolivares

I think they have somewhat of a proportionate relationship. The higher n is, the lower the effective energy. Of course it also depends on how filled the last shell is and how many shells in total the atom has.

rikolivares

It's related to the quantity of electrons, not the wavelength or frequency.

rikolivares

On Friday we went over the different labels to specify an electron (shell, subshell, max electrons, orientation, etc.) but I still cannot understand how you derive all of them, especially the orientation/spin. How can you tell what shell an electron is in or what spin it has? Thank you!

rikolivares

The right side of the Periodic table doesn't have fixed signs on the charges of the elements, it's a case by case basis.

rikolivares

En = - hR/n^2 is a simplified version that measures the lost energy of an electron. If you're trying to calculate the energy loss of a level, you need to know the frequency and level to solve it.

rikolivares

I don't think we need to go over the symbol phi for this class. It has to do with organic chemistry and I believe it represents a group of atoms.

rikolivares

I believe he just choose that number because it was convenient. E is just a unit like moles that helps measure electric charge.

rikolivares

I assume it was just to underscore the large number, but I don't think there would be any problem if you answered in meters in a question like this for a quiz or test. I think meters is always the safest bet.

rikolivares

The problem asks Hydrazine, N 2 H 4, is an oily liquid used as a rocket fuel. It can be prepared in water by oxidizing ammonia with hypochlorite ions: 2 NH3(g) + ClO (aq) = N2H4(aq) + Cl (aq) + H2O(l). When 35.0 g of ammonia reacted with an excess of hypochlorite ion, 25.2 g of hydrazine was produce...

rikolivares

For a, you would first need to find the molar mass of two oxygen atoms. It is given that the metal M is 88.8% of the compound, so O2 must be the rest. I think next you can divide percentage of O2 (as a decimal, e.g. 20% would be .20) by its own molar mass, and finally multiply the number by 100 to f...

CHEMISTRY COMMUNITY

Search found 24 matches

pH scale

Re: Ligand Binding Places

Re: 7th edition 9C.3: Potassium Hexacyanidochromate (III)

Re: Wednesday Lecture Notes

Re: 7th Edition 3F.1

VSEPR Formula: Central Atom

Naming Shapes

Re: pi-bonds

Re: Polarizability

Dipole-Dipole vs Induced Dipole

Re: Wednesday 11/07/2018 lecture notes

Re: Electron density fluctuation

Ml Meaning

Re: Atomic Radius

Re: Effective Nuclear Charge vs. the Energy of a Shell

Re: Intensity of radiation

Labeling Electron Orbitals

Re: Oxygen

Re: Rydberg's Equation (hydrogen)

Re: φ

Re: Explaining Millikan's Experiment

Re: Homework Question Edition 6 E1

Fundamentals 7th Edition M1

Re: HW Problem F.7