CHEMISTRY COMMUNITY

Caroline Cox 1H

Assuming you are talking about the equation dGo=-nFEo, the value of n is never negative as it corresponds to the number of electrons, not the charge of those electrons.

Caroline Cox 1H

A double vertical line represents the salt bridge with the anode on the left and the cathode on the right. A single vertical line represents a phase change, while a comma is used when they are in the same state.

Caroline Cox 1H

Yes, entropy is a state function, so you can separate this problem into two parts then add them together.

Caroline Cox 1H

The reaction rate is the actual rate of the reaction occurring while the rate constant is a value you multiply by the current concentration of the reactant in order to get the reaction rate.

Caroline Cox 1H

Yes, even though it is not in step 3 it would still be considered an intermediate because an intermediate is any transient species in a multi step reaction. It does not need to be in all of the steps.

Caroline Cox 1H

Is there any way for us to determine the intermediates of a particular reaction and how many intermediates a reaction will have, or does that information have to be given to us?

Caroline Cox 1H

Yes, it is because CO2 is zero order and therefore is not a factor that determines rate (aka not in the slow step).

Caroline Cox 1H

The reducing power of an element is its ability to reduce other substances.

Caroline Cox 1H

The reaction mechanism is a series of step by step simple reactions that take place to eventually form the overall reaction.

Caroline Cox 1H

To determine if a metal will dissolve in a solution, you need to look at the redo reaction, separate it into two half reactions to balance, and then calculate the E of the cell. From there, you use this value to calculate the deltaGo. If this is negative, the forward reaction is spontaneous, so if t...

Caroline Cox 1H

Step one is an adiabatic process which means that q=0 and therefore deltaU = w. From here, we use the equation w=-Pext*deltaV and plug in the values to get the number of Joules. For step 2, we are returning to the original internal energy, so deltaU is the same as the value we just calculated for st...

Caroline Cox 1H

For this problem, you would use the equation w = -Pext * deltaV to solve for the number of Joules because we are looking for the work done when a system expands against a constant external pressure.

Caroline Cox 1H

I understand why a salt bridge is necessary for a cell, but what exactly is it made of usually?

Caroline Cox 1H

Without a salt bridge, there would be a charge buildup as electrons are transferred from one beaker to another. A salt bridge allows ions to flow, so the two solutions stay neutral.

Caroline Cox 1H

Yes, the the formation of aqueous gold from solid gold is not a spontaneous reaction and therefore a positive delta G alone means the gold will not dissolve.

Caroline Cox 1H

When delta G is zero that means the system is at equilibrium.

Caroline Cox 1H

Yes, Professor Lavelle told us in class that Gibbs Free Energy is also a state function.

Caroline Cox 1H

Can someone explain to me why we can assume that deltaH and deltaS are constant when using the Van't Hoff equation to calculate K at different temperatures?

CHEMISTRY COMMUNITY

Search found 18 matches

Re: n: negative or positive

Re: cell diagram placement

Re: change in volume and then temperature

Re: Rate constant

Re: Intermediates

Intermediates

Re: Friday Lecture

Re: Test 2 Q5

Re: Reaction Mechanism

Re: Dissolving [ENDORSED]

Re: Midterm Q5

Re: Midterm 4A

Salt Bridge

Re: Salt Bridge

Re: Gold and Nitric Acid

Re: Delta G°

Re: state functions

Constants