Search found 31 matches

by Yukta Italia 3I
Mon Dec 03, 2018 5:44 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: pOH
Replies: 5
Views: 257

Re: pOH

Just know that pOH is the -log[OH-] and a low pOH means that the solution is more basic. While we're on this topic, does anyone know why a low pKA means that it is a stronger acid? The higher the pKA value, the more tight the proton is held. Since one of the properties of a strong acid is its abili...
by Yukta Italia 3I
Mon Dec 03, 2018 5:19 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Chelates
Replies: 4
Views: 90

Re: Chelates

Does this mean that molecules that can act as chelates are polydentate?
by Yukta Italia 3I
Mon Dec 03, 2018 5:17 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Tetrahedral vs. square-planar
Replies: 6
Views: 173

Re: Tetrahedral vs. square-planar

What is the difference between tetrahedral and square planar in terms of coordination compounds? I know that for square planar there are four ligands at the corners of a square, but I am unsure of how to discern it from the tetrahedral ligand coordination complex.
by Yukta Italia 3I
Mon Nov 26, 2018 3:23 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: test #3
Replies: 14
Views: 498

Re: test #3

according to the website, it says all of molecular shape and bonding will be on test #3 but we haven't covered bond order, diamagnetism, or paramagnetism. so will these subjects be on test #3 or not ? In one of the other posts Dr. Lavelle said that bond order questions are "fair game." I'...
by Yukta Italia 3I
Mon Nov 26, 2018 3:13 pm
Forum: Hybridization
Topic: Hybridization & Types of Bonds [ENDORSED]
Replies: 3
Views: 91

Re: Hybridization & Types of Bonds [ENDORSED]

Every bond has one sigma bond, the number of pi bonds depends on whether it is a double or triple bond.
by Yukta Italia 3I
Mon Nov 26, 2018 3:08 pm
Forum: Sigma & Pi Bonds
Topic: Which bond would break first.
Replies: 15
Views: 535

Re: Which bond would break first.

If pi bonds are weaker than sigma bonds then why are double and triple bonds stronger than single bonds?
by Yukta Italia 3I
Wed Nov 21, 2018 2:17 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Bond Angles
Replies: 13
Views: 277

Re: Bond Angles

Yes I believe we are supposed to remember bond angles. I think the easiest thing to do is memorize them, but you can always try to visualize by drawing out the Lewis structure. That may get frustrating on a test with limited time though.
by Yukta Italia 3I
Wed Nov 21, 2018 2:14 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: predicting dipole moments
Replies: 4
Views: 97

Re: predicting dipole moments

If a molecule does have a symmetrical molecular shape, such as the tetrahedral, that doesn't necessarily entail that the molecule is nonpolar. I would say that if all 4 atoms surrounding the central atom are the same and the net dipoles cancel out, then the molecule is nonpolar.
by Yukta Italia 3I
Wed Nov 21, 2018 2:07 pm
Forum: Hybridization
Topic: Hybridization
Replies: 6
Views: 109

Re: Hybridization

You can determine hybridization by counting the number of electron densities surround the central atom in a Lewis Structure. For example, H2O has 4 regions of electron density: the central oxygen atom has 2 lone pairs and 2 hydrogen atoms bonded. Since there are 4 regions of electron density, the hy...
by Yukta Italia 3I
Mon Nov 12, 2018 11:15 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Tetrahedral versus Trigonal Pyramidal
Replies: 3
Views: 86

Re: Tetrahedral versus Trigonal Pyramidal

Why does a tetrahedral have bond angles of 109.5 degrees while a trigonal pyramidal have bond angles of less than 109.5 degrees. Is it because the lone pair on the trigonal pyramidal is closer to the central atom and pushes the other atoms closer together? Yep it's because the lone pair repels the ...
by Yukta Italia 3I
Mon Nov 12, 2018 11:11 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: determining VSEPR models
Replies: 6
Views: 126

Re: determining VSEPR models

While determining VSEPR formulas, does the E represent the total number of electrons not bonded or a collective lone pair? For example if the central atom had 2 electrons that aren't bonded would the E in the formula be E1 or E2?
by Yukta Italia 3I
Mon Nov 12, 2018 11:03 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Homework Problem: SOCl2 bond angles
Replies: 1
Views: 94

Homework Problem: SOCl2 bond angles

In the 6th Edition Chapter 4 HW #7 part b, how do the lone pair electrons on the sulfur atom repel the bonded pairs with O and Cl equally?
by Yukta Italia 3I
Thu Nov 08, 2018 9:21 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: Polarizability and Dispersion Forces
Replies: 2
Views: 141

Re: Polarizability and Dispersion Forces

Venya Vaddi 1H wrote:If an atom or molecule is more polarizable, does this mean that its dispersion forces are stronger?

Yes, dispersion forces are stronger because the molecules are able to attract to each other more.
by Yukta Italia 3I
Thu Nov 08, 2018 9:19 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: Distortion, Polarizability
Replies: 2
Views: 109

Re: Distortion, Polarizability

Polarizability is how easily an element can be distorted. It depends on the number of electrons and the size of the atom or molecule. The more electrons an atom has, the more polarizable it is because the nuclear charge of the atom has less of an effect. As polarizability increases, dispersion force...
by Yukta Italia 3I
Thu Nov 08, 2018 9:02 pm
Forum: Ionic & Covalent Bonds
Topic: Ionic vs Covalent Bonds
Replies: 18
Views: 524

Re: Ionic vs Covalent Bonds

Covalent bonds are associated with the sharing of electrons between two nonmetals while Ionic bonds involve the transfer of electrons between a metal and nonmetal, which involves lattice energy. Ionic bonds are extremely stronger than covalent bonds because of the smaller distance between Ionic bon...
by Yukta Italia 3I
Thu Nov 01, 2018 1:03 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Formal charge purpose
Replies: 40
Views: 1439

Re: Formal charge purpose

kellyzhang1210 wrote:why is the element most stable when its formal charge is 0?

When the formal charge of an element is 0, it's in the neutral state, which means that the amount of electrons is kind of "balanced" so that's why there is less instability.
by Yukta Italia 3I
Thu Nov 01, 2018 1:00 pm
Forum: Electronegativity
Topic: Electroegativity
Replies: 9
Views: 499

Re: Electroegativity

Do you think there will be any circumstances where we have to identify electronegativity trends between elements that are really close together because that seems a little ambiguous?
by Yukta Italia 3I
Thu Nov 01, 2018 12:44 pm
Forum: Resonance Structures
Topic: Resonance
Replies: 8
Views: 204

Re: Resonance

When we have to draw Lewis Structures on the midterm do you think we'll have to draw every resonance structure possible?
by Yukta Italia 3I
Sat Oct 27, 2018 2:54 pm
Forum: Trends in The Periodic Table
Topic: Ionization Energy and Electron Affinity
Replies: 9
Views: 516

Re: Ionization Energy and Electron Affinity

Why are electrons that are further away from the nucleus easier to remove?
by Yukta Italia 3I
Sat Oct 27, 2018 2:50 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Electron Affinity [ENDORSED]
Replies: 7
Views: 192

Re: Electron Affinity [ENDORSED]

So are elements with high electron affinity most likely to form anions?
by Yukta Italia 3I
Sat Oct 27, 2018 1:11 pm
Forum: DeBroglie Equation
Topic: Nodal Planes
Replies: 4
Views: 181

Re: Nodal Planes

There aren't any electrons on these nodal planes correct?
by Yukta Italia 3I
Mon Oct 15, 2018 9:33 pm
Forum: Properties of Electrons
Topic: Electrons in a stable state?
Replies: 6
Views: 155

Re: Electrons in a stable state?

So electrons in higher energy states contain higher potential energy, while electrons in lower energy states contain lower potential energy? Does this mean that electrons in higher energy states are more unstable than electrons in lower energy states? Yes, they are more unstable because the higher ...
by Yukta Italia 3I
Mon Oct 15, 2018 8:20 pm
Forum: Properties of Electrons
Topic: Electrons in a stable state?
Replies: 6
Views: 155

Re: Electrons in a stable state?

So electrons in higher energy states contain higher potential energy, while electrons in lower energy states contain lower potential energy? Does this mean that electrons in higher energy states are more unstable than electrons in lower energy states?
by Yukta Italia 3I
Mon Oct 15, 2018 8:17 pm
Forum: Properties of Light
Topic: Momentum of Photon
Replies: 4
Views: 96

Re: Momentum of Photon

What are some examples of particles or objects that don't have any momentum? Is that even possible?
by Yukta Italia 3I
Mon Oct 15, 2018 8:13 pm
Forum: Photoelectric Effect
Topic: Photoelectric effect
Replies: 5
Views: 121

Re: Photoelectric effect

I have a question from Chapter 1 in the 6th edition of the textbook, regarding question 22. Why does the photoelectric effect best support the idea that electromagnetic radiation has the properties of particles?
by Yukta Italia 3I
Mon Oct 08, 2018 9:17 pm
Forum: Administrative Questions and Class Announcements
Topic: Solutions Manual
Replies: 9
Views: 521

Re: Solutions Manual

I find the solutions manual pretty helpful because sometimes it's easier to just see the work and understand what the question is trying to ask based off of that.
by Yukta Italia 3I
Mon Oct 08, 2018 9:15 pm
Forum: Administrative Questions and Class Announcements
Topic: Type of calculator
Replies: 8
Views: 238

Re: Type of calculator

I'm using that calculator too! It should be fine since it's non-graphing and non-programmable.
by Yukta Italia 3I
Thu Oct 04, 2018 3:18 pm
Forum: Significant Figures
Topic: Decimal point
Replies: 14
Views: 277

Re: Decimal point

Does that mean 120. has 3 sig figs and 120 has two sig figs?
by Yukta Italia 3I
Thu Oct 04, 2018 3:13 pm
Forum: Student Social/Study Group
Topic: Homework Format
Replies: 3
Views: 133

Re: Homework Format

My TA said that writing the question is not necessary but you can always check with your TA to make sure.
by Yukta Italia 3I
Wed Oct 03, 2018 4:49 pm
Forum: Administrative Questions and Class Announcements
Topic: Registering/Creating Your Chemistry Community Account
Replies: 18
Views: 34621

Re: Registering/Creating Your Chemistry Community Account

For the Peer Learning Sessions, is there a link to sign up for spots or can you just drop in during the designated sessions?

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