CHEMISTRY COMMUNITY

Alexandra_Shambayate_2L

Hi Chelsey!! I don't think you have to put a prefix indicating the amount of double or triple bonds that are present in a cyclo-alkene/alkyne; the numbering in front of the name should be enough to indicate the position and amount of double or triple bonds involved in the molecule.

Alexandra_Shambayate_2L

Noble gases have eight electrons and they are considered the most stable elements, therefore it is most ideal and stable for other elements to have a shell of eight electrons to be at its most stable point.

Alexandra_Shambayate_2L

Yes they can, just as long as carbon does not go over four bonds.

Alexandra_Shambayate_2L

It depends on the mechanism, but it can come from either. Sometimes the electrons come from the atoms themselves, such as in the example of O- or Br- giving an e- to C+; other times it comes from the bonds, such as from a single, double or triple bond giving an e- to an atom.

Alexandra_Shambayate_2L

I believe it doesn't really matter. Both equations are calculating the same deltaG, it's just that the one that includes deltaH -TdeltaS is more accurate than the -RTlnK equation when finding deltaG, and Ea is found through the equation deltaH+RT

Alexandra_Shambayate_2L

I think we should know how to derive these equations, because past finals have asked for the derivations.

Alexandra_Shambayate_2L

The step that affects the rate law is considered the slow step.

Alexandra_Shambayate_2L

Because you ice must melt into liquid, it must undergo a phase change. The (n)(deltaH fusion) is the heat (q) required to go from an ice state to a liquid state. Once the ice is melted and is a liquid, them you can solve for m C deltaT. Hope this helps!

Alexandra_Shambayate_2L

We are always supposed to include the units KJ/mol regarding delta G. The book made mistakes and only included KJ in some of their answers to the practice problems about Gibbs, but they are supposed to be KJ/mol.

Alexandra_Shambayate_2L

The number of electrons that you account for are the equal number of electrons transferring within each of the oxidation and reduction half reaction equations.

Alexandra_Shambayate_2L

Internal energy is the energy within a system at any time, while Gibbs free energy is energy that is available to be given off to do work.I hope this helps somehow.

Alexandra_Shambayate_2L

HI! I think it has to do with the randomness of a system. Entropy is defined as the measure of disorder in a system. Degeneracy is defined as the number of possible states something can be in to achieve a certain energy. In this sense, the higher the degeneracy, the higher the entropy. If something ...

Alexandra_Shambayate_2L

At a molar heat capacity of a gas at constant pressure, volume changes in order to maintain a certain pressure, and by doing so the the system does work when it expands or contracts with each adjustment. At a molar heat capacity of a gas at a constant volume, pressure changes, however, no work is do...

Alexandra_Shambayate_2L

Specific heat capacity is the heat required to raise the temperature of 1 gram by 1 degree C, while molar heat capacity is the heat required to raise the temperature of 1 mole by 1 degree C. To figure out when to use which, I think you would just have to see if the question is being asked in grams o...

CHEMISTRY COMMUNITY

Search found 14 matches

Re: Multiple double or triple bonds

Re: Why do 8 electrons form a stable shell? [ENDORSED]

Re: C and functional groups

Re: movement of electrons

Re: standard free energy of activation and Ea

Re: Equations for order reactions

Re: Multi Step Reaction

Re: Midterm WINTER 2013 Question

Re: kJ or kJ/mol?

Re: how to calculate n correctly

Re: Gibbs Free Energy vs. Internal Energy

Re: Entropy and Degeneracy

Re: Work of Expansion

Re: Clarification on Heat Capacities