CHEMISTRY COMMUNITY

Gabrielle Schwab 1G

So for cycloalkanes, when determining if they are cis or trans we look at whether the two substituents of interest are positioned upwards or downwards regardless of if they are axial or equatorial correct?

Gabrielle Schwab 1G

Can someone help me with tert and sec substituents? I'm having trouble identifying and drawing them.

Gabrielle Schwab 1G

Yes I believe you look at the number of lone pairs when this number is different between two species. However, if they have the same number of lone pairs, then you would look at polarizability.

Gabrielle Schwab 1G

So I know that something like Br- would be a nucleophile. I am just wondering why a species like this would be willing to share an electron with an electrophile because isn't a species like Br- it in its most stable from as it is?

Gabrielle Schwab 1G

For 15.29, do you switch the initial concentration of A with the concentration of A at time t in the first order rate law equation because the question is asking for the reaction expressed as the rate of loss of A?

Gabrielle Schwab 1G

For 15.3 c do you divide your answer from a by 2 because there are two moles of NO2?

Gabrielle Schwab 1G

Can someone explain to me when you need to use Pt(s)? Also, for the cell diagram, how do we know the order to write the species that is being oxidized and its oxidized form and vice versa. I know the oxidized half reaction is written on the left of the cell diagram but between the two species on the...

Gabrielle Schwab 1G

For this question, why can't you just use the delta G standard conditions when calculating the delta G of the reaction for at 25 degrees C? Is it because we do not know if it is in standard conditions regarding pressure and concentration?

Gabrielle Schwab 1G

Why in an isolated system is W (degeneracy) maximum at equilibrium?

Gabrielle Schwab 1G

Can someone explain how the work done during a reversible expansion of a gas is the maximum expansion work possible? I know it explains this in the book but it didn't make much sense to me.

Gabrielle Schwab 1G

Can someone explain to me conceptually why work of expansion of a gas is negative? If a gas is expanding isn't it doing work on its surroundings so shouldn't it be positive?

Gabrielle Schwab 1G

Ok great that makes complete sense. Thank you both!

Gabrielle Schwab 1G

I just want to make sure I am understanding this correctly. Steam causes greater burns than water at the same temperature because it releases more joules of energy into the body, right?

Gabrielle Schwab 1G

I know how to calculate that. The question gave you the molarity of the strong acid and the molarity and volume of the weak base and then asked for the ph at the very end of the titration which is well past the stoich point.

Gabrielle Schwab 1G

How do you calculate the final volume of acid in a strong acid/ weak base titration? Because there is a homework problem in the book that deals with this and I wasn't sure how to do it.

Gabrielle Schwab 1G

How would I know that AlCl3 would form Al(H2O)5OH2+ instead of Al(OH)3?

Gabrielle Schwab 1G

Can someone please explain to me how we know that BaO is only basic but As2O3 and Bi2O3 can be amphoteric? (This is from the 12.17 practice problem)

Gabrielle Schwab 1G

Can someone please explain the inductive effect?

Gabrielle Schwab 1G

I have a clarification question. Changing the concentration of a solid or liquid does not affect the concentration of the aqueous or gaseous substances in the reaction right?

Gabrielle Schwab 1G

How can you determine the maximum number of places on a ligand that can bind simultaneously to a single metal center?

Gabrielle Schwab 1G

Could someone please explain why diatomic molecules with Z greater than or equal to 8 have p sigma bonds that are lower in energy than their p pi bonds but it is the opposite for molecules with Z less than 8.

Gabrielle Schwab 1G

For chapter 4 practice problem #13, wouldn't IO3- be more stable with two double bonds with two oxygens and one lone pair as opposed to the answer in the book which writes it with three single bonds and one lone pair?

Gabrielle Schwab 1G

I am still a little confused why a compound with resonance structures has lower energy and therefore is more stable than if it didn't have any. I know it says the answer in the book but I am still unclear. Can someone explain please?

Gabrielle Schwab 1G

I watched the online module video for the Atomic Spectra. For one of the pre and post video quiz questions, I was able to figure out the answer by the process of elimination. However, I was wondering how to do the first part of the following problem if it weren't a multiple choice question. It says,...

Gabrielle Schwab 1G

That makes much more sense. Thank you very much.

Gabrielle Schwab 1G

So in the lecture on Monday we discussed the photoelectric effect and I was wondering if someone could tell me if I have the concept down correctly. So if we were looking at light as a wave, changing the intensity/ amplitude of light did not produce electrons. However, looking at light as particles,...

CHEMISTRY COMMUNITY

Search found 26 matches

Cis and Trans for cycloalkanes

tert and sec substituents

Re: Nucleophiles

Stability of nucleophiles

Integrated rate laws

Unique rate of reaction

Homework Question 14.13

11.83 practice problem question

Degeneracy and Equilibrium

Reversible expansion

Work of expansion sign

Re: Steam burn

Steam burn

Re: final volume of strong acid/weak base titration

final volume of strong acid/weak base titration

AlCl3 forms...

Amphoteric Compounds

Inductive Effect

Changing concentrations of solids and liquids

Max # of ligand bonding sites

MO Z<8 vs Z>/=8

Chapter 4 #13

Resonance Structures and Energy/ Stability

Atomic Spectra Online Module Question

Re: Photoelectric Effect clarification question

Photoelectric Effect clarification question