Search found 11 matches

by Maggie Miller 2K
Tue Mar 14, 2017 10:01 pm
Forum: *Alkanes and Substituted Alkanes (Staggered, Eclipsed, Gauche, Anti, Newman Projections)
Topic: Newman Projections: Only 2 Carbons?
Replies: 1
Views: 374

Newman Projections: Only 2 Carbons?

Hello,

Just out of currosity, are Newman projections only used for 2 carbon structures? What would happen if you wanted to draw 3 or 4 carbon structures?

Thank you!
by Maggie Miller 2K
Thu Mar 09, 2017 12:07 pm
Forum: *Alkenes
Topic: Naming a Alkene with a Functional Group
Replies: 2
Views: 389

Naming a Alkene with a Functional Group

I just had a conceptual question: if a double bond is considered a functional group, it gets priority in naming. But what happens when there is another functional group, let's say an alcohol, attacked to the alkene. Which functional group gets priority in naming?

Thanks!
by Maggie Miller 2K
Tue Feb 28, 2017 10:49 pm
Forum: *Organic Reaction Mechanisms in General
Topic: Molecule Structure in Reaction Mechanisms
Replies: 1
Views: 280

Molecule Structure in Reaction Mechanisms

When drawing out reaction mechanisms, I still get confused as to when to add partial positive and negative symbols to the atoms in molecules and when to label certain things. Is there a certain convention that exists?

Thanks!
by Maggie Miller 2K
Tue Feb 21, 2017 11:12 pm
Forum: Second Order Reactions
Topic: Orders for Reactions
Replies: 2
Views: 424

Orders for Reactions

When reviewing the notes, it seems that the order of reactions in some cases (like elementary steps for overall reactions) can be found just with the coefficients. However, in other cases (I do not know which), you cannot consider the coefficients to be the order for the reactants. In which scenario...
by Maggie Miller 2K
Wed Feb 15, 2017 11:54 pm
Forum: Second Order Reactions
Topic: Disregarding Products and Focusing on Reactants
Replies: 2
Views: 398

Disregarding Products and Focusing on Reactants

I am still a little confused on why exactly you can disregard the products that are formed and just focus on the reactants in order to get the rate. It is just a little conceptually difficult to wrap my mind around, so maybe someone could explain!

Thanks for the help!
by Maggie Miller 2K
Tue Feb 14, 2017 10:31 pm
Forum: Third Law of Thermodynamics (For a Unique Ground State (W=1): S -> 0 as T -> 0) and Calculations Using Boltzmann Equation for Entropy
Topic: Winter Midterm 2013 Q2C
Replies: 1
Views: 343

Winter Midterm 2013 Q2C

In this problem, my course reader had multiple answers printed and I don't know which is correct.

Is the answer supposed to me more or less ice?

Thanks!!
by Maggie Miller 2K
Tue Feb 07, 2017 2:41 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Making Half Reactions and Including Cell Potential
Replies: 1
Views: 189

Making Half Reactions and Including Cell Potential

When I was doing some of the homework and going over my answers using the solution manual, I noticed that the solution manual always included the standard cell potentials of the half reactions, even if the question asked you just to create half reactions and make a balanced equation. Is it standard ...
by Maggie Miller 2K
Wed Feb 01, 2017 12:13 pm
Forum: Van't Hoff Equation
Topic: Concept of Entropy and Enthalpy is Constant for Changing Temperatures
Replies: 1
Views: 305

Concept of Entropy and Enthalpy is Constant for Changing Temperatures

In the derivation of the Van't Hoff Equation used to calculate K at a different T if change in enthalpy is unknown, why is it appropriate to assume that the change in entropy and the change in enthalpy are constant when there is a temperature change? if the temperature change is large, won't there b...
by Maggie Miller 2K
Wed Jan 25, 2017 10:23 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Gibbs Free Energy of Formation
Replies: 1
Views: 321

Gibbs Free Energy of Formation

If, according to what Professor Lavelle stated, gibbs free energy can't be measured directly, how is it that gibbs free energies of formation are able to be calculated? How is that done?

Thanks!
by Maggie Miller 2K
Tue Jan 17, 2017 10:54 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Reaction Enthalpies: When kJ and when kJ/mol?
Replies: 1
Views: 311

Reaction Enthalpies: When kJ and when kJ/mol?

In several of the chapter 8 homework problems we have had to do, sometimes the reaction enthalpy will need to be in kJ/mol, often in order to continue the problem and result in just kJ, but sometimes it does not. I am confused by when kJ or kJ/mol is used with standard reaction enthalpies because it...
by Maggie Miller 2K
Wed Jan 11, 2017 6:08 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Cha. 8 HW Problem #57
Replies: 7
Views: 922

Re: Cha. 8 HW Problem #57

I think it IS supposed to be entalphy of combustion! on page 296 towards the bottom in Example 8.11, it says entalphy of combustion and then writes "delta H subscript c." Either way, the numbers for the entalphy are given to you, so what EXACTLY the c means does not matter in this case! Ho...

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