Search found 29 matches
- Sat Dec 08, 2018 2:50 am
- Forum: Bronsted Acids & Bases
- Topic: H2PO4 -
- Replies: 3
- Views: 1324
Re: H2PO4 -
H2PO4- is not amphiprotic, but HPO42- is amphiprotic
Re: churro 31
It is [Ni(NH3)5(NO2)]2+
- Sat Dec 08, 2018 2:47 am
- Forum: Amphoteric Compounds
- Topic: Amphiprotic vs. Amphoteric
- Replies: 7
- Views: 933
Re: Amphiprotic vs. Amphoteric
Amphiprotic means it is able to donate or accept electrons, where amphoteric means it is able to act as either an acid or base.
- Sat Dec 08, 2018 2:44 am
- Forum: Calculating the pH of Salt Solutions
- Topic: Atoms that don't affect pH
- Replies: 3
- Views: 508
Re: Atoms that don't affect pH
Br is considered a spectator ion, and would not affect the formation of H+ or OH- ions, and hence would not affect the pH of the solution.
- Sat Dec 08, 2018 2:43 am
- Forum: Lewis Acids & Bases
- Topic: H-
- Replies: 3
- Views: 303
Re: H-
H- would be able to accept a proton, and hence would be a Bronsted base. However, it could also donate electrons so would also be considered a lewis Base
- Sat Dec 08, 2018 2:39 am
- Forum: Dipole Moments
- Topic: churro 38
- Replies: 3
- Views: 616
Re: churro 38
The mass of the molecule with Se is much greater, and hence will experience a greater level of London dispersion forces. Mass and London dispersion forces are proportional.
- Sat Dec 08, 2018 2:38 am
- Forum: Properties of Light
- Topic: Electromagnetic Radiation and Speed
- Replies: 2
- Views: 639
Re: Electromagnetic Radiation and Speed
In terms of De Brogile's equation, wavelength and velocity are inversely proportional. Other than that, speed of all waves should be the same (3x10^8ms-1).
- Sat Dec 08, 2018 2:31 am
- Forum: Resonance Structures
- Topic: Bond Lengths
- Replies: 5
- Views: 601
Re: Bond Lengths
In resonance structures, the electrons of the pi bonds in double bonds are delocalized, meaning they move over the entire atom. This means the delocalized electron is shared between all bonds, resulting in equal bond lengths and strengths.
- Sat Dec 08, 2018 2:30 am
- Forum: Administrative Questions and Class Announcements
- Topic: FINAL PRACTICE - Lyndon's Churro Review Session [ENDORSED]
- Replies: 118
- Views: 20792
Re: FINAL PRACTICE - Lyndon's Churro Review Session [ENDORSED]
Thank you so much for this!
- Sat Dec 08, 2018 2:25 am
- Forum: Acidity & Basicity Constants and The Conjugate Seesaw
- Topic: Ka and Kb on Final
- Replies: 9
- Views: 2746
Re: Ka and Kb on Final
We will not need to know Ka and Kb values for the final. This will be covered in 14B. The only acids and bases calculations we will do is for pH.
- Sat Dec 08, 2018 2:24 am
- Forum: Naming
- Topic: Anionic complex name
- Replies: 2
- Views: 319
Re: Anionic complex name
Generally, these are the most common transition metals that will appear. The metals you have listed will suffice, and any other compounds with a negative charge will just require an "ate" at the end.
- Sat Dec 08, 2018 2:23 am
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: -dentate of Ligands
- Replies: 1
- Views: 235
Re: -dentate of Ligands
It is determined by how many sites/bonds the ligand attaches to the central metal atom. So 1 would be mono, 2 would be bi, 3 would be tri and so on.
- Sat Dec 08, 2018 2:21 am
- Forum: Naming
- Topic: confusion name to formula
- Replies: 4
- Views: 484
Re: confusion name to formula
You are correct. The overall charge of the compound will be neutral, and so since potassium has a 3+ charge, the overall charge of the complex will be -3, and hence end in "ate"
- Sat Dec 08, 2018 2:19 am
- Forum: Naming
- Topic: order of ligands when going from name to formula
- Replies: 3
- Views: 413
Re: order of ligands when going from name to formula
List them in alphabetical order of the first letter of each ligand
- Sun Dec 02, 2018 11:46 pm
- Forum: Amphoteric Compounds
- Topic: Amphoteric compounds besides water
- Replies: 6
- Views: 493
Re: Amphoteric compounds besides water
Aluminium Oxide (Al2O3) is another amphoteric compound. It is able to have reactions where it acts as an acid or base, depending on the other species it is reacting with.
- Sun Dec 02, 2018 11:43 pm
- Forum: Hybridization
- Topic: Hybridization
- Replies: 11
- Views: 1223
Re: Hybridization
Trigonal planar is sp^2
- Sun Dec 02, 2018 11:41 pm
- Forum: Properties & Structures of Inorganic & Organic Acids
- Topic: Water
- Replies: 4
- Views: 502
Re: Water
It's neutral because it is amphoteric and can accept or donate a proton
- Sat Nov 24, 2018 12:05 am
- Forum: Dipole Moments
- Topic: Polarity
- Replies: 5
- Views: 1255
Re: Polarity
The polarity of water results in partial charges on the oxygen and hydrogen atoms. This means they can form electrostatic attractions between the polar solute and water, hence dissolve the particles.
- Sat Nov 24, 2018 12:03 am
- Forum: Electronegativity
- Topic: Largest Electronegativity
- Replies: 4
- Views: 420
Re: Largest Electronegativity
Fluorine would have the largest electronegativity. Electronegativity increases when going up a group, and when going from left to right on the periodic table.
- Sat Nov 24, 2018 12:02 am
- Forum: Hybridization
- Topic: double bonds
- Replies: 14
- Views: 1128
Re: double bonds
A single bond consists of a sigma bond. A double bond consists of a sigma and a pi bond, where the electron density is above and below the internuclear axis
- Sun Nov 11, 2018 2:34 am
- Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
- Topic: Isoelectronic
- Replies: 14
- Views: 2078
Re: Isoelectronic
Isoelectric means 2 atoms that share the same electron configuration of the outermost shell (share the same number of valence electrons)
- Sun Nov 11, 2018 2:33 am
- Forum: Dipole Moments
- Topic: Induced-Dipole Induced-Dipole
- Replies: 5
- Views: 617
Re: Induced-Dipole Induced-Dipole
An induced dipole results in randomly moving electrons in an atom suddenly accumulating on one side of an atom, resulting in a negative charge. This will "induce" a positive charge on one side of an adjacent atom, and hence result in an instantaneous dipole. This effect will cascade to adj...
- Sun Nov 11, 2018 2:31 am
- Forum: Dipole Moments
- Topic: induced-dipole
- Replies: 3
- Views: 565
Re: induced-dipole
Induced dipoles result from randomly moving electrons in an atom forming a temporary negative charge on one side of the atom. As a result, this temporary charge will "induce" a positive charge on one side of an adjacent atom, and hence result in an instantaneous dipole.
- Sun Nov 04, 2018 10:42 pm
- Forum: Properties of Electrons
- Topic: Electron Configuration
- Replies: 9
- Views: 1112
Re: Electron Configuration
Yes, because the atom would be more stable if the entire of an orbital is filled out rather than partially filled.
- Sun Nov 04, 2018 10:40 pm
- Forum: Resonance Structures
- Topic: Resonance Structures
- Replies: 3
- Views: 388
Re: Resonance Structures
Yes. It is best to draw all resonance structure for safety reasons.
- Sun Nov 04, 2018 10:39 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Ionization Energies
- Replies: 4
- Views: 372
Re: Ionization Energies
Yes, because the effective nuclear charge increases after removing the first electron.
- Fri Oct 26, 2018 2:07 am
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Ground state vs. excited state
- Replies: 5
- Views: 706
Re: Ground state vs. excited state
Excited state atoms absorb energy and are promoted to higher energy levels, making them unstable. This means they experience an increase in the electron shell they occupy. Ground state electrons are just electrons that have not been excited.
- Fri Oct 26, 2018 2:05 am
- Forum: SI Units, Unit Conversions
- Topic: Sig Figs
- Replies: 8
- Views: 930
Re: Sig Figs
You round your answer to the lowest number of significant figures that are present in the given numerical values from the question.
- Fri Oct 26, 2018 2:01 am
- Forum: SI Units, Unit Conversions
- Topic: What Unit of Mass to Use?
- Replies: 5
- Views: 912
Re: What Unit of Mass to Use?
Kilograms (kg) is the SI unit for mass equations. However, mass will only be used to molar calculations. If you are given grams, often times you will need to convert it to kilograms.