CHEMISTRY COMMUNITY

Aarthi_Lakshmi_2A

Dr. Lavelle, you have no idea how much I would want you again as a professor. You're obviously very bright, enthusiastic, but most of all, kind. You always have a smile on your face, which makes chemistry seem much less daunting. Thank you for a great quarter.

Aarthi_Lakshmi_2A

Does it affect the rate law whether the slow step or the fast step comes first?

Aarthi_Lakshmi_2A

If arrows are supposed to point from electron rich regions and go towards electron deficient regions, why are there so many examples of arrows going from hydrogen to bromine or to chlorine? Is it because the electrons first move to hydrogen and move somewhere else from there?

Aarthi_Lakshmi_2A

How are carbocations formed, exactly? If a hydrogen with a partial positive charge attaches to one carbon, how does another carbon end up as a cation?

Aarthi_Lakshmi_2A

In energy profiles, do we simply write out the products and reactants or do we draw them using carbon line structures? And do we need to write something in the form [C.....A.....B] (with a superscript double crossed t) as part of our energy profile?

Aarthi_Lakshmi_2A

How many transition states can an SN2 reaction have? Is there a limit?

Aarthi_Lakshmi_2A

Does the Steady-State method require integration? I don't quite understand how it works. And how does the Steady-State method work if there are multiple intermediates?

Aarthi_Lakshmi_2A

What is a liquid scintillation counter and how can it detect the number of high energy electrons? Why is it even necessary to detect the number of high energy electrons?

Aarthi_Lakshmi_2A

I know that for cell diagrams, the elements from the anode are on the left and the elements from the cathode are on the right. But amongst those anode and cathode sections, what is the order? Are the reactants on the left and the products on the right? I saw examples in the text book that indicated ...

Aarthi_Lakshmi_2A

How does a positive standard reduction potential indicate that reduction is spontaneous? Is there a specific reason? And if the standard reduction potential is negative, does that mean oxidation is spontaneous?

Aarthi_Lakshmi_2A

In a perfect system, qsys + qsurr = 0. If a reaction is taking place inside a calorimeter, is qcalorimeter the equivalent of qsurr? Or is the calorimeter also part of the system?

Aarthi_Lakshmi_2A

What are calorimeters typically made out of? And does the material that the calorimeter is made out of affect the specific heat capacity of the calorimeter significantly?

Aarthi_Lakshmi_2A

In most cases, some of the reactants won't be used up (a.k.a. They are NOT limiting reactants); does that affect the standard reaction enthalpy when one calculates delta H reaction by subtracting delta H reactants from delta H products? If so, how? Sorry for not putting the standard reaction enthalp...

Aarthi_Lakshmi_2A

I know that there is an enthalpy of sublimation, but it what cases would sublimation occur? How can the liquid state be skipped all together? Wouldn't the compound have to be liquid at some point as it transitions from solid to gas, even if it's only liquid for a minuscule period of time?

CHEMISTRY COMMUNITY

Search found 14 matches

Re: Saying Thank You to Dr. Lavelle

Order of Steps

Arrows

Carbocation

Energy Profiles Products and Reactants

Transition States

Steady-State Method

Liquid Scintillation Counter

Cell Diagram Orders

Spontaneous Reduction

System vs. Surroundings with a Calorimeter

Calorimeters [ENDORSED]

Remaining Reactants

Sublimation