CHEMISTRY COMMUNITY

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Because of the way the log function ln(t2)-ln(t1) = ln(t2/t1) which is final-initial and since this is thermodynamics, that is what you would be looking for!

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The only exceptions I can think of is that the tripple bond is given priority for numbering the carbons.

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When do we use the general rate law that has coefficeints -1/a d(a)/dt etc.
I havent run into a problem when we use this so im wondering if I will for hte quiz.

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Hi! For the rate law equations you don't use the stoichiometric coefficient because you don't necessarily know that that is the coefficient throughout all of the steps in the reaction is 2. Because you know that it is first order, you only take it to the power of 1.

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15.51 The following mechanism has been proposed for the reaction between nitric oxide and bromine: Step 1: NO -> Br2 + NOBr2 (slow) Step 2: NOBr2 + NO + NOBr -> NOBr (fast) Write the rate law for the formation of NOBr implied by this mechanism. The explanation for the answer: k(NO)(Br2) says that th...

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When homework questions ask us to order a list of metals by reducing or oxidizing power, I understand how to use the table to get the E values and to adjust for oxidation but how do I know which ion to choose? for example Cu has about 4 different states all with vastly different E values so how do I...

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In the Gold Ring Dissolving example from page 52 of the course reader I see that we are using the reduction reaction for nitric oxide. But Im confused how you would know to do this seeing as you are putting a gold ring in a solution of nitric acid... so the nitric acid has to have already formed. If...

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What are the two equations for q? The course reader has an equation for constant pressure. But what is it for variable pressure?

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Cant an isolated system still expand?

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Generally energy is not required to form a bond but it is definately required to break a bond.

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But how do you know what the sign of the forward reaction was to begin with? is that dependent on whether the reaction is endothermic or exothermic?

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Here is the mp4 format

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https://www.youtube.com/watch?v=ce9xjUWgYh0[/youtube]

https://www.youtube.com/watch?v=ce9xjUWgYh0

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This question asks tells you that that the equilibrium pressures in a reaction are 1.08 bar for BrCl, 4.9 for Br2, and 7.6 for Cl2. Then it says that half of the brcl is removed from the container and equilibrium is reestablished. what is the new partial pressure? I have attempted this problem both ...

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Also, is it only Hydrogen and Helium that can have less than an octet?

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Hi, I have a question about emitting photons. I do not know how to solve for that quantity using the equations that we have for energy, wavelength etc. In problems 1.27 and 1.59 they use/ask for the "number of photons given off" that should be equal to the amount of electrons that excite a...

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Hello, In discussion, we were told that it might be helpful to use the Rydberg Equation instead of the Bohr Frequency Condition because it is easier to understand (it has no negatives etc.) However, the output of the Bohr is an Energy while the output of the Rydberg is a Velocity so I don't understa...

CHEMISTRY COMMUNITY

Search found 17 matches

Re: Entropy for Changes in Pressure

Re: Exceptions

General rate Law

Re: How Balancing Affects Rate Law

Question 51 in the homework [ENDORSED]

Ordering Ions in terms of Reducing Power

Choosing Oxidation vs Reduction

Q in constant p and constant v

Re: Isolated vs Isothermal

Re: Constant P Calorimeter - Bond Formation Q???

Re: change in enthalpy value

Re: Naming Coordination Compounds Tutorial

Naming Coordination Compounds Tutorial

Problem 10 in the 1st Chapter 3 Practice Quiz

Re: Expanded Octet

Photon Emission

Bohr Frequency Condition versus Rydberg Equation