Looking at hw question 40 in chapter 2 of the organic textbook for reference.
When there is a functional group like an alcohol or aldehyde and a double bond, which gets priority or does it just depend on whichever number pairing gives the lower numbers?
Search found 12 matches
- Fri Mar 11, 2016 5:07 pm
- Forum: *Alkenes
- Topic: Double Bond Vs Alcohol Number Priority
- Replies: 1
- Views: 2956
- Wed Mar 09, 2016 7:13 pm
- Forum: *Cyclohexanes (Chair, Boat, Geometric Isomers)
- Topic: Change in energy from substituents
- Replies: 1
- Views: 460
Re: Change in energy from substituents
I think it just depends what the confirmation is already and where substituent is placed within the molecule. If you have a confirmation like a boat confirmation and you add a CH3 substituent to the flagpole carbon, the energy will increase due to the increased amount of steric interactions with the...
- Wed Mar 02, 2016 11:34 am
- Forum: Arrhenius Equation, Activation Energies, Catalysts
- Topic: Quiz 2 2015 practice
- Replies: 2
- Views: 563
Re: Quiz 2 2015 practice
Start by finding the activation energy given the two rate constants k1 and k2 and two temperatures T1 and T2. Once you find the activation energy you use it with the new given temperature of 790 K and the previous temperature 350 K.
- Fri Feb 26, 2016 1:16 pm
- Forum: *Alkanes
- Topic: Double Headed Arrow
- Replies: 4
- Views: 1095
Re: Double Headed Arrow
Heather Lindsay 1H wrote:How do we know to use a double headed arrow? When a bond breaks, are two electrons considered to be transferred?
Yes, for bond breaks two electrons are transferred and thus a double arrow is used.
- Sun Feb 21, 2016 9:05 am
- Forum: General Science Questions
- Topic: sig figs if problem uses ln
- Replies: 2
- Views: 1215
Re: sig figs if problem uses ln
sig figs when using logarithms represent the number of decimal places used within the logarithm. Ex: log .5 would give 1 sig fig and log .12 would have 2.
- Sat Feb 13, 2016 11:19 am
- Forum: General Rate Laws
- Topic: Half-Lifes
- Replies: 2
- Views: 498
Re: Half-Lifes
You could for the first order reaction since half life depends only on k. However for second order reactions, there is also a dependance on the initial concentration value so it may be harder to justify.
- Sun Feb 07, 2016 9:10 am
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: Does n have units?
- Replies: 2
- Views: 1346
Re: Does n have units?
N stands for the moles of electrons balanced.
- Sat Jan 30, 2016 6:32 pm
- Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
- Topic: Isothermal, Delta U = 0
- Replies: 2
- Views: 883
Re: Isothermal, Delta U = 0
Both situations are the same. The signs just refer to whether the system is doing work, losing energy, etc. So depending on the situation, the q or w could be negative.
- Sun Jan 24, 2016 2:40 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Hess's Law
- Replies: 3
- Views: 586
Re: Hess's Law
Multiplying/dividing in addition to flipping the direction of the reaction around when adding or subtracting. Just make sure that when you flip a reaction the delta H value associated with it takes on a negative sign.
- Sun Jan 24, 2016 2:37 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Workbook Quizzes
- Replies: 3
- Views: 656
Re: Workbook Quizzes
I believe you do each workbook quiz, and at the end the combined workbook quiz scores will replace your lowest in class discussion quiz you take.
- Sat Jan 16, 2016 6:23 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Bond Enthalpy
- Replies: 2
- Views: 860
Re: Bond Enthalpy
In order to break a bond, energy is needed. This uptake in energy constitutes a positive enthalpy value. On the other hand, to make bonds energy is release, and thus enthalpy value will be negative because energy is leaving the system.
- Sat Jan 09, 2016 4:56 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Heat vs. Specific Heat Capacity
- Replies: 4
- Views: 2723
Re: Heat vs. Specific Heat Capacity
Heat Capacity will be less useful because it is the amount of energy in the form of heat needed to raise the temperature of the whole object by 1 degree C. Depending on the size of the object, more energy may be needed. For example, more energy will be needed to heat a 5 gallon tank of water 1 degre...