Search found 11 matches

by Nadege Diedrich 1H
Mon Mar 07, 2016 2:10 pm
Forum: *Cyclohexanes (Chair, Boat, Geometric Isomers)
Topic: Cis and Trans
Replies: 1
Views: 318

Re: Cis and Trans

I don't think it matters so much for stability if it is trans or cis. I think it is more important to focus on if the substituents are axial (less stable) or equatorial.
by Nadege Diedrich 1H
Mon Mar 07, 2016 2:08 pm
Forum: *Alkanes
Topic: 2011 Final; Q6
Replies: 1
Views: 258

Re: 2011 Final; Q6

Line structures are considered to be 2D structures. Also I don't think we have to include proper angles.
by Nadege Diedrich 1H
Mon Feb 29, 2016 7:34 pm
Forum: *Alkanes
Topic: Neo vs tert butyl
Replies: 3
Views: 548

Neo vs tert butyl

I know that they both have a cross shape but how do they differ from one another?
by Nadege Diedrich 1H
Tue Feb 23, 2016 5:12 pm
Forum: *Alkanes
Topic: Single bond vs. Double Bond
Replies: 3
Views: 2894

Single bond vs. Double Bond

Why do saturated hydrocarbons (single bonds) have stronger intermolecular forces than unsaturated hydrocarbons (double bonds)?
by Nadege Diedrich 1H
Tue Feb 16, 2016 8:13 pm
Forum: Second Order Reactions
Topic: 3rd order?
Replies: 7
Views: 716

3rd order?

What is the units for third order rxns?
by Nadege Diedrich 1H
Tue Feb 09, 2016 11:22 am
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: Is E a state function?
Replies: 2
Views: 454

Is E a state function?

I know that E is not a state function but I was wondering as to why?
by Nadege Diedrich 1H
Tue Feb 02, 2016 6:28 pm
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: Calculating E Values
Replies: 1
Views: 548

Calculating E Values

How come when you calculate E, and you multiply the half reaction by a number to balance out the number of moles, the value of E does get multiplied by the same coefficient? Whereas, when you use Hess's Law, delta H gets multiplied by the coefficient that was used to balance the equation.
by Nadege Diedrich 1H
Mon Jan 25, 2016 11:06 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Calculating final temperature of a system
Replies: 3
Views: 522

Re: Calculating final temperature of a system

You have to look at the problem and decide what units you want to end with. Most of the times you have to convert to K because when doing your calculations it allows you to cancel out with other units and therefore get your final answer in the units that the question requires.
by Nadege Diedrich 1H
Mon Jan 18, 2016 4:21 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Course Reader Pg.26
Replies: 1
Views: 180

Course Reader Pg.26

On page 26, there is an example that says ' an exothermic run (delta h =-50kj)...". Is this reaction under constant pressure and if it is, is it because it is in an open beaker or because it says assume 'P=1atm'?
by Nadege Diedrich 1H
Thu Jan 14, 2016 5:13 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Question on 8.28
Replies: 1
Views: 251

Re: Question on 8.28

Whenever something is at constant volume, we know the work is =0. We know this because at constant volume, we use the equation w=-p*change in volume. If volume is constant, there is no change, so delta volume is equal to zero. Therefore when you multiple -p by 0, you get that work is =0.
by Nadege Diedrich 1H
Wed Jan 06, 2016 6:54 pm
Forum: Phase Changes & Related Calculations
Topic: Course Reader Help
Replies: 2
Views: 398

Course Reader Help

On page 18 of the course reader, in the second example, how do the amounts below the product (CH3-CH2BR) relate to the equation since there are 3 values but only one molecule?

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