CHEMISTRY COMMUNITY

Shrita Pendekanti 4B

What does it mean for reactants/products to be thermodynamically stable?

Shrita Pendekanti 4B

This is the error message we are getting when we try to upload. What should we do?

Shrita Pendekanti 4B

Torsional strain is caused by electron repulsion between neighboring atoms while bond angle strain is caused when bond angles disagree with the ideal orientation of the molecule. Hope this helps!

Shrita Pendekanti 4B

Oh ok, so then a greater difference in electronegativity would cause partial charges?

Shrita Pendekanti 4B

Ok, so if they are close in electronegativity, then the electrons will be more shared, giving the atoms partial rather than complete charges?

Shrita Pendekanti 4B

Can someone please clarify how we know when atoms in a molecule should have partial charges? Thanks!

Shrita Pendekanti 4B

The objective of step 2 is to write the rate law of the rate-determining step (slow step) in a manner that agrees with the experimentally derived rate law. To do this, you must substitute the intermediate with something else that's present in the experimental rate law. So, you're substituting the in...

Shrita Pendekanti 4B

I believe that for this specific question, you are able to figure out which is the anode because it asks for the Ka value. Ka is the acid dissociation constant and therefore, H+ must be a product. So, it is part of the anode reaction.

Shrita Pendekanti 4B

Just thought I'd share this helpful way to remember how to distinguish oxidation from reduction: OIL RIG

Oxidation
Is
Loss (of electrons)

Reduction
Is
Gain (of electrons)

:)

Shrita Pendekanti 4B

Does q necessarily equal -w in a reversible process?

Shrita Pendekanti 4B

Also make sure the length of your horizontal line is proportional to how much heat should be supplied, and that your slopes accurately represent the different heat capacities (smaller heat capacities will have steeper slopes because less energy needs to be absorbed for the temperature to rise).

Shrita Pendekanti 4B

I would really appreciate an explanation of how q, w, U, and H are related. Some specifics I would like answered: When exactly does q = -w and why? Why does q = delta U when volume is constant? And why does q = delta H when pressure is constant?

Thank you so much!

Shrita Pendekanti 4B

Is Gibbs Free Energy at a constant pressure always 0? I figured since ΔH= q at a constant pressure and ΔS = q/t that substituting these terms into the Gibbs free equation ΔG = ΔH - TΔS would become ΔG = q-T(q/t) = q - q = 0. I am wondering if someone can explain if this is correct, why this is the c...

Shrita Pendekanti 4B

You should be able cancel out the intermediate terms by manipulating one of the steps in the process so that the molecule you wish to cancel is present in an equal number of moles on the opposite side of the reaction equation in some other step. This way, the terms cancel out when the steps are adde...

Shrita Pendekanti 4B

A state function describes the equilibrium state of a system. In this case, enthalpy describes a thermodynamic system, irrespective of the paths each part of the system took to arrive at its current state. Heat is not a state function because it is a form of energy being transitioned as a cause of c...

Shrita Pendekanti 4B

Chem14A.m4v Intended to be an all-encompassing study tool, our video begins with an explanation of balancing chemical equations, followed by the basics of the photoelectric effect, Heisenberg's uncertainty principle, molecular shape and structure, molecular orbital theory, and naming coordination c...

Shrita Pendekanti 4B

I believe this is the answer because a structure that includes a radical is not supposed to be of the lowest energy possible. But rather, that unpaired electron is there to make bonds with another atom, which is more likely to happen if Cl has only 2 single bonds and thus has not filled its octet.

Shrita Pendekanti 4B

One of the most important things to look at when drawing Louis Structures is the formal charge of each atom. Doing this should help you figure out which bond will provide for the most stable structure. (Stability is essentially based on filling necessary octets in the most energy efficient manner.)

Shrita Pendekanti 4B

It helps to think of it like they have d-orbitals "available" since they are in the third energy level (n=3 so l=2), but they just don't need to occupy these orbitals given the number of electrons they have.

Shrita Pendekanti 4B

Heisenberg's Indeterminacy Equation actually either allows you to calculate the uncertainty in position (delta x) or the uncertainty in momentum (delta p). The probability of finding the electron's location can be found by squaring the wavelength function.

Shrita Pendekanti 4B

I'm having trouble understanding the verbal form of Schrodinger's Equation: "Operate a change on psi (x,y,z) = Energy psi (x,y,z)"

What does the operation of a change on an electron entail and why does it equal its energy?

Shrita Pendekanti 4B

So to solve this problem, you first use Heisenberg's Indeterminacy Equation, which looks like the following: Delta p x Delta x >= h/(4pi) The question gives us the uncertainty in position (Delta x) by stating the diameter of the lead atom, 350 pm. Because we want to keep our units to meters, we make...

CHEMISTRY COMMUNITY

Search found 22 matches

Thermodynamic Stability

Re: Video Competition

Re: Bond Angle Strain vs. Torsional Strain

Re: Partial Charges

Re: Partial Charges

Partial Charges

Re: Pre-Equilibrium Approach

Re: Midterm Winter 2014 Q. 7 and 8

Remember Oxidation vs. Reduction

q and w in a reversible process

Re: How to draw a heating curve?

Relating q, w, U, and H

Gibbs at Constant Pressure

Re: Hess's Law

Re: heat and state function

Video:Crash Course on Photoelectric Effect and Others

Re: ClO2 Lewis Structure

Re: Bonds

Re: Expanded Octet

Re: Heisenberg's Equation

Conceptual Explanation of Schrod. Equ. Pls!

Re: Speed of an Electron (hw 1.43)