CHEMISTRY COMMUNITY

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I think it depends

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I think we submit it electronically maybe via scannable

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I could be wrong but Kw=[H+][OH-] and when you have K=[H+]/[OH-] it could just be talking about a reaction where you're doing normal products over reactants and they aren't asking for Kw

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kinetics deals with reaction speed while thermodynamics deals with stability

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look at the reduction potentials and the one with the most positive reduction potential is the cathode and from there you can figure out which one is oxidized and reduced (AnOx, RedCat)

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find the rate law you get from the experiment and then whichever step that has that same rate law is the slowest one.

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you use it to find the equilibrium constant K. It defines the relationship between activation energy, the equilibrium constant, temperature, and A which is the frequency factor.

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Yes you would balance them and use that number as your n.

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Normally the rate law deals with only reactants but if it includes product then it has a negative order if the product is in the denominator.

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Max potential is standard E cell (the one with the degree symbol next to the E). Not sure about minimum potential

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I believe the product is the cathode, at least in most cases.

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I think platinum would work as well, like we did in class.

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Because you need the solid as a cathode/anode to transfer the electrons.

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You can use either. They mean the same thing.

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Here are the notes from Monday's lecture

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Pt meant platinum and it was used as an inert conductor/electrode to transfer electrons. We include it in the cell diagram on the cathode side.

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It probably is but I don't think we will have to deal with anything like that.

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The salt bridge allows ion transfer and keeps the two solutions neutral.

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It's derived from delta g because delta G equals delta H-T delta S as well as -RTlnK so you can set those two equations equal to each other and solve for lnK.

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Because we can't measure the electron transfer of one cell.

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Yes it is possible.

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no intermolecular attractive forces.

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I think you will be told whether or not change in S is constant.

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The reaction is going in the reverse direction.

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Look through the textbook, it specifies the conditions under which each equation is used.

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I think you can assume it's standard conditions (298K) unless otherwise specified.

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Section 4.C.3 from the textbook might be helpful to look at.

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Yes I think so.

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I think that would be given to us.

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Yes the Boltzmann constant is only used for gases.

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We use the equation n^2. We use 2 because it's a two-state system and N represents the number of particles.

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Volume and pressure are inversely related.

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No we only know what to do when p is constant.

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Pressure and enthalpy are directly proportional so pressure needs to be constant in order to properly measure enthalpy.

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Any of the problems from the Thermodynamics section right after Acids and Bases.

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inert gasses and noble gasses are the same.

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Only products and reactants with (aq) or (g) next to them will be included in the equilibrium constant expression. If it has (l), which solvents will, or (s), it is not included in the expression.

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enthalpy is the study of heat released or absorbed in chemical reactions and physical changes. Heat is the energy transfer that results from a change in temperature between an object and its environment.

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I believe Dr. Lavelle said that a catalyst only pertains to how quickly the reaction happens. It doesn't have anything to do with the actual components of the reaction.

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you might need to use the Kc value and not the K value if they're different.

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By removing the product causing the reaction to instinctively produce more product.

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We use ICE tables when the question is asking for the equilibrium concentrations of the reactants and products and it's not explicitly said that whatever numbers you are given are the equilibrium concentrations.

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I think it's safe to just use Kc when in doubt.

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When dealing with equilibrium problems, you only need to take into account gases and aqueous solutions. In other words, ignore substances in solid and liquid form when writing your expression.

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the ideal gas law helps us convert from partial pressure to concentration and vice versa.

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When the reaction goes left or right it simply means that a change on one side forces the reaction to make up for that change and shifts to the appropriate side.

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Because we use partial pressure when dealing with gasses.

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Le Chatelier's Principle: the idea that chemical reactions adjust so as to minimize the effect of any changes.

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