CHEMISTRY COMMUNITY

Richard Ku 4H

H2PO4- is not amphiprotic, but HPO42- is amphiprotic

Richard Ku 4H

It is [Ni(NH3)5(NO2)]2+

Richard Ku 4H

Amphiprotic means it is able to donate or accept electrons, where amphoteric means it is able to act as either an acid or base.

Richard Ku 4H

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.

Richard Ku 4H

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

Richard Ku 4H

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.

Richard Ku 4H

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).

Richard Ku 4H

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.

Richard Ku 4H

Thank you so much for this!

Richard Ku 4H

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.

Richard Ku 4H

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.

Richard Ku 4H

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.

Richard Ku 4H

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"

Richard Ku 4H

List them in alphabetical order of the first letter of each ligand

Richard Ku 4H

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.

Richard Ku 4H

Trigonal planar is sp^2

Richard Ku 4H

It's neutral because it is amphoteric and can accept or donate a proton

Richard Ku 4H

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.

Richard Ku 4H

Fluorine would have the largest electronegativity. Electronegativity increases when going up a group, and when going from left to right on the periodic table.

Richard Ku 4H

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

Richard Ku 4H

Isoelectric means 2 atoms that share the same electron configuration of the outermost shell (share the same number of valence electrons)

Richard Ku 4H

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...

Richard Ku 4H

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.

Richard Ku 4H

Yes, because the atom would be more stable if the entire of an orbital is filled out rather than partially filled.

Richard Ku 4H

Yes. It is best to draw all resonance structure for safety reasons.

Richard Ku 4H

Yes, because the effective nuclear charge increases after removing the first electron.

Richard Ku 4H

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.

Richard Ku 4H

You round your answer to the lowest number of significant figures that are present in the given numerical values from the question.

Richard Ku 4H

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.

CHEMISTRY COMMUNITY

Search found 29 matches

Re: H2PO4 -

Re: churro 31

Re: Amphiprotic vs. Amphoteric

Re: Atoms that don't affect pH

Re: H-

Re: churro 38

Re: Electromagnetic Radiation and Speed

Re: Bond Lengths

Re: FINAL PRACTICE - Lyndon's Churro Review Session [ENDORSED]

Re: Ka and Kb on Final

Re: Anionic complex name

Re: -dentate of Ligands

Re: confusion name to formula

Re: order of ligands when going from name to formula

Re: Amphoteric compounds besides water

Re: Hybridization

Re: Water

Re: Polarity

Re: Largest Electronegativity

Re: double bonds

Re: Isoelectronic

Re: Induced-Dipole Induced-Dipole

Re: induced-dipole

Re: Electron Configuration

Re: Resonance Structures

Re: Ionization Energies

Re: Ground state vs. excited state

Re: Sig Figs

Re: What Unit of Mass to Use?