CHEMISTRY COMMUNITY

Samantha Rundle 3K

Why is it inappropriate to use cis and trans when you are not using two carbons and two hydrogens?

Thank you!

Samantha Rundle 3K

Is there any correlation between steric strain and torsional strain?

Thank you!

Samantha Rundle 3K

Saturated hydrocarbons also have a lot more hydrogens attached to each carbon because of the lack of double and triple bonds. I like to think they are "saturated" with hydrogens.

Samantha Rundle 3K

Why does the intermediate line that is drawn through the activation energy curve have to be on the same level as the reactants?

Thanks!

Samantha Rundle 3K

When doing problems where we have to figure out which step is the slow step, will we ever be expected to write out the reaction for each step? If so, what information will be given and how would we go about making the reactions?

Thanks!

Samantha Rundle 3K

I understand that when you are asked to use an ideal gas without a specific heat value, you use C(vol)=3/2R when it is monatomic, C(vol)=5/2R when it is diatomic, and C(vol)=3R when it is polyatomic. I was wondering what determines the value of the coefficient in each case.

Thank you!

Samantha Rundle 3K

Dr. Lavelle said that when you are just given two half reactions to reverse the one with the smaller E value, so that the cell potential is positive, meaning electrons flow left to right. What are the effects of a reversing the half reaction with a larger E?

Thank you!

Samantha Rundle 3K

When calculating enthalpy of a reaction, if the enthalpies of each compound are provided, I use the sum of the enthalpies of the products, minus those of the reactants, but in some cases, the enthalpy of each compound is provided, but Hess's Law must be used to calculate the enthalpy of the reaction...

Samantha Rundle 3K

I understand that degeneracy is the number of ways of achieving a given energy state, and that the more ways there are makes a higher degeneracy, but it is better to have a higher or lower degeneracy?

Samantha Rundle 3K

The course reader says that Cp is the molar heat capacity of a gas at constant pressure. Csp stands for the specific heat capacity of a gas at constant pressure. So Cp is the heat required to raise the tempurature of one mole of a gas by one degree celsius at constant pressure, and Csp is the heat r...

Samantha Rundle 3K

I understand that in titrations, at the half stoichiometric point the pH=pKa, so that is when the the Henderson Hasselbalch equation should be used, but can't we use it for the whole buffer region of a titration, or is that wrong because [HA] does not equal [A-]?

Thanks!

Samantha Rundle 3K

If we are told to find the pH of a buffer and it is not equal to the pKa, does that mean the buffer is weak?

Thanks!

Samantha Rundle 3K

If you calculate the pH and it comes out neutral, is that similar to being a very weak acid or is it a different state completely? Also when a weak acid has a pH less than 10^-7, does that mean that it barely dissociates, because strong acids and bases dissociate completely?

Samantha Rundle 3K

For the homework there are examples where we have to include "ion" when naming a compound that has a charge, but when converting the name to the formula, none of them had "ion" in their names. If we did have to write out the compound for an ion, would it tell us the charge needed...

Samantha Rundle 3K

I understand the definition of a chelating complex, but how would one go about identifying whether or not a molecule can form a chelating complex by looking at lewis structures like in problem 17.35 in the homework?

Samantha Rundle 3K

If a diamagnetic molecule's highest occupied molecular orbital is anti-bonding, its bond order would be less. Does this mean that there is no relation between magnetism and stability?

Samantha Rundle 3K

Is there a quicker way to determine if there are resonance structures, other than calculating formal charge? If so, how?

Thanks!

Samantha Rundle 3K

Why can P, S, and Cl accommodate more than 8 valence electrons? I know the course reader says they have d-orbitals in the valence shell that accommodate additional electrons, but I'm not sure I understand what that means because their electrons do not occupy a d-orbital. Can somebody please clarify?...

Samantha Rundle 3K

This is also why atom size decreases across the periodic table, because of the increase in protons in the nucleus and the increase of electrons in the same shell draws the electrons in; however, when moving down a group the size will increase because the added shells place electrons further from the...

Samantha Rundle 3K

Are we supposed to have the correct sig figs for each step or just the final answer?

Thanks!

Samantha Rundle 3K

Thank you so much!

Samantha Rundle 3K

I understand that different atoms have different ground states, but when we are asked questions, where the ground state is not n=1, will the ground state always be given or are there ways to solve for it?

Thank you!
Samantha Rundle

Discussion 4L

CHEMISTRY COMMUNITY

Search found 22 matches

Re: Cis and trans Vs. Z and E

Torsional vs Steric Strain

Re: Saturated and Unsaturated Hydrocarbons

Intermediate Line

Reaction Steps Given

Ideal Gas with no specific heat capacity

2 Half Reactions

When to use Hess's Law

Degeneracy

Re: Cp and Csp

Henderson-Hasselbalch in the Buffer Region

Buffer Capacity

Re: pH below or above 7 or neutral

Writing Formulas for Ionic Compounds

Re: Chelating Complexes

Magnetism and Stability

Determining Resonance

Re: Expanded Octet

Re: Sizes of an atom

Re: All students read this sig fig post [ENDORSED]

Re: Ground State

Ground State