## Search found 19 matches

Tue Mar 08, 2016 9:12 pm
Forum: *Constitutional and Geometric Isomers (cis, Z and trans, E)
Topic: 2011 Practice Final Number 7A
Replies: 1
Views: 509

### 2011 Practice Final Number 7A

In this problem I do not understand why it is trans and not cis. When you look at it the OH and CH3 are on the same side.
Tue Mar 08, 2016 5:46 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: residual entropy
Replies: 1
Views: 394

### residual entropy

Why does NO have greater residual entropy at 0 Kelvin instead of BF3?
Tue Mar 08, 2016 5:45 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Heat Capacity
Replies: 1
Views: 292

### Heat Capacity

Why is there a higher heat capacity for ethane than ethene?
Tue Mar 01, 2016 10:26 pm
Forum: *Cycloalkanes
Topic: order of naming
Replies: 3
Views: 530

### Re: order of naming

If atomic mass is never taken into account, then how come for question 5 in the first quiz 3 preparation, the "bromo" substituent is given the bigger number (3) and the "iodo" substituent is given the smaller number (1) – even though it is a tie and if read left to right iodo wou...
Tue Mar 01, 2016 8:09 pm
Forum: *Cycloalkanes
Topic: order of naming
Replies: 3
Views: 530

### order of naming

When numbering substituents, do you give the substituents with the most atomic mass the lowest number even if it would give the other two substituents a higher number, or do you just number the substituents based on the fact that you just want lower numbers?
Sun Feb 28, 2016 4:10 pm
Forum: *Cycloalkanes
Topic: naming
Replies: 1
Views: 342

### naming

In the exercises for chapter 1 in the organic course reader on for question 21c, how come the methyl receives the smaller number rather than the ethyl if it is supposed to be in alphabetical order? If you counted it a certain way since it is a cycloalkane the methyl could either be 1 or 3 and in thi...
Sun Feb 28, 2016 4:04 pm
Forum: *Alkenes
Topic: Naming
Replies: 1
Views: 384

### Naming

When naming a compound with a double bond and a substituent, which one do you want to have the lower number?
Wed Feb 24, 2016 5:35 pm
Forum: *Free Energy of Activation vs Activation Energy
Topic: 4.36
Replies: 1
Views: 365

### 4.36

Can someone please explain why for all reactions, standard gibbs free energy is positive?
Wed Feb 24, 2016 5:17 pm
Topic: reaction profiling
Replies: 1
Views: 309

### reaction profiling

Why in a curve for a reaction with two transitions, the first reaction is slower (the higher reaction) than the second?
Wed Feb 24, 2016 5:12 pm
Replies: 1
Views: 304

why when HBr is added to CH3CHCH2, H attacks the CH2 bond and not the CH bond according to the solutions to question 28 on the hw? Does it matter?
Wed Feb 24, 2016 5:01 pm
Topic: hydrogen versus iodine
Replies: 1
Views: 389

### hydrogen versus iodine

In electrophilic addition, when HI is added to an organic molecule why does the H bond first?
Wed Feb 24, 2016 4:41 pm
Forum: *Nucleophiles
Topic: fluorine
Replies: 1
Views: 388

### fluorine

why is F with no charge considered an electrophile and not a nucleophile?
Thu Nov 19, 2015 10:21 pm
Forum: Naming
Topic: Naming Order
Replies: 2
Views: 411

### Naming Order

When listing the coordination compound after receiving information about the name, how would we order the ligands? Is it based on alphabetical order or the number of charges?
Thu Nov 19, 2015 10:19 pm
Forum: Naming
Topic: Iron [ENDORSED]
Replies: 6
Views: 964

### Iron[ENDORSED]

When naming a coordination compound with iron as the transition metal, would you use Iron or Ferris if it was a cation?
Mon Nov 02, 2015 6:46 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Paramagnetic versus Diamagnetic
Replies: 1
Views: 463

### Paramagnetic versus Diamagnetic

Is there a better way to determine diamagnetism or paramagnetism without doing the entire MO diagram? I noticed that one of the questions from past quizzes for quiz 2 stated that atoms or molecules with an odd number of electrons are paramagnetic. Do we somehow apply this rule to figure out a faster...
Mon Nov 02, 2015 1:22 am
Forum: Hybridization
Topic: Unpaired electrons
Replies: 2
Views: 390

### Unpaired electrons

When a lewis structure contains an unpaired electron, would this change the molecular structure or the hybridization? The answer is no, correct? Because although the electron is unpaired it still is in the same bond region or something? Aren't these the same rules that apply to why a triple bond, wh...
Mon Oct 19, 2015 12:03 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Bond Angles
Replies: 1
Views: 392

### Bond Angles

For the molecule CO3^2-, the lewis structure contains a double bond. Do double bonds affect the bond angle? because the since a double bond is stronger, wouldn't it have a stronger pull toward the carbon in the center? Or does the distance between each element remain equidistant.
Wed Oct 07, 2015 5:15 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Electron Configuration for Chromium
Replies: 1
Views: 554

### Electron Configuration for Chromium

Since the electron configuration for Chromium with 3d^5 is slightly more stable, the electron configuration for chromium is: [Ar]3d^5 4s^1. The electron from the s orbital moves to the d orbital in order to make it more stable. However, we also learned that through the electron configuration of ions...
Sat Oct 03, 2015 9:05 pm
Forum: Properties of Light
Topic: light as a particle
Replies: 1
Views: 377

### light as a particle

Since light and electrons can act as particles, as shown through diffraction patterns, what other objects have this property?