## Search found 17 matches

Sat Mar 12, 2016 8:30 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Question 3 on Final 2014
Replies: 1
Views: 268

### Question 3 on Final 2014

Can someone please help with Question #3 (the one with Pikachu) on the Winter 2014 Final? I am really lost as to how things were chosen for part A.
Sat Mar 12, 2016 4:13 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Determining Anodes and Cathodes
Replies: 1
Views: 254

### Determining Anodes and Cathodes

When given a word problem about a standard electrochemical cell such as: A silver electrode being placed into a 1.0M Ag+ solution and a cadmium electrode being placed into a 1.0M Cd2+ solution. How do we tell which is going to act as the anode and which will act as the cathode? Thanks.
Fri Mar 11, 2016 10:30 pm
Forum: *Alkanes
Topic: Ethane vs Ethene Heat Capacity
Replies: 2
Views: 504

### Ethane vs Ethene Heat Capacity

Hi all, I'm doing the Winter 2011 Final and came across the question whether or not ethane or ethene has the higher heat capacity. Can someone explain to me why the answer is ethane? I would've thought the double bond in ethene would've contributed to a higher heat capacity. Secondly, Why does NO ha...
Wed Mar 09, 2016 5:01 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8017
Views: 1402170

### Re: Chemistry Jokes

Not so much of a joke but more a humorous observation. Has anyone noticed that when you say the equation:
S = KblnW it sounds a lot like: Entropy is equal to Boltzmann's constant times Ellen DeGeneres-y???
Tue Mar 08, 2016 1:39 am
Forum: Administrative Questions and Class Announcements
Replies: 1
Views: 402

If the final is going to be 8 questions like the midterm, but we are also given an extra hour, does that mean we can expect each question to have more parts (a,b,c,d etc.) than the midterm?
Fri Mar 04, 2016 12:11 am
Forum: *Cyclohexanes (Chair, Boat, Geometric Isomers)
Topic: Cyclohexane problem
Replies: 1
Views: 301

### Cyclohexane problem

In the quiz workbook, there was a problem where an isopropyl and 2 methyls were attached to a cyclohexane right next to each other. Following the fact that isopropyl comes before dimethyl in the alphabet, I had named it 1-Isopropyl-2,2,-dimethylcyclohexane. The answer however switched the numbers (2...
Fri Feb 26, 2016 10:57 pm
Forum: *Alcohols
Topic: 4-Chloro-2-Butanol
Replies: 1
Views: 386

### 4-Chloro-2-Butanol

Can someone please explain to me why on page 104 of the course reader the Chloro in 4-Chloro-2-Butanol comes before the Butanol? Why does this break the alphabet rule?
Sat Feb 20, 2016 6:18 pm
Forum: *Organic Reaction Mechanisms in General
Replies: 1
Views: 309

In the course reader, we went over examples of transition phases, and I remember there was an example in which we showed Bromine bonding to Hydrogen in the transition phase, but it was later pulled off before the next transition phase even took place. What is the purpose of that bond being shown if ...
Sun Feb 14, 2016 11:25 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8017
Views: 1402170

### Re: Chemistry Jokes

In honor of Valentines Day:

Roses are Red
Violets are Blue
You melt my heart
like Ba(OH)2
Sun Feb 14, 2016 12:07 am
Forum: Second Order Reactions
Topic: Half Life Patterns
Replies: 1
Views: 344

### Half Life Patterns

Can someone please explain to me why it is that 2nd order reaction half lives get larger with each subsequent time interval, zero order gets smaller, but 1st order remains the same? What is the conceptual reason behind this?
Mon Feb 08, 2016 1:34 am
Forum: Balancing Redox Reactions
Topic: Oxidizing and Reducing Agents
Replies: 1
Views: 309

### Oxidizing and Reducing Agents

Can someone please explain the idea behind oxidizing and reducing agents? I learned in discussion that they are the exact opposite of what their name implies so some clarification would be nice. Thanks
Mon Feb 08, 2016 1:28 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8017
Views: 1402170

### Re: Chemistry Jokes

What is the first rule of thermodynamics? You don't talk about thermodynamics.
Mon Feb 08, 2016 1:27 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8017
Views: 1402170

### Re: Chemistry Jokes

What do you call a tooth in a glass of water? A one molar solution!
Mon Feb 08, 2016 1:01 am
Forum: Phase Changes & Related Calculations
Topic: Enthalpy and Entropy
Replies: 1
Views: 280

### Enthalpy and Entropy

Is the process for calculating the change in enthalpy for a certain substance undergoing phase changes (when we use the heating curve) essentially the same as calculating the change in entropy? (differing in just the values obviously). Thanks!
Sun Jan 31, 2016 6:35 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Entropy vs Gibbs
Replies: 2
Views: 436

### Entropy vs Gibbs

Can someone please explain to me the difference between entropy and Gibbs free energy in terms of spontaneity? I remember when we learned about entropy, it was described as having to do with spontaneity but now I don't see the distinction - conceptually - with that and Gibbs free energy.
Sat Jan 23, 2016 10:10 pm
Forum: Calculating Work of Expansion
Topic: Extensive vs Intensive
Replies: 1
Views: 281

### Extensive vs Intensive

Can someone please clarify the difference between an extensive and an intensive property along with what they relate to in terms of thermodynamics/chemistry? Thank you!
Sat Jan 16, 2016 11:04 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Qsystem = -Qsurroundings help
Replies: 2
Views: 1414

### Qsystem = -Qsurroundings help

In the equation Qsystem = -Qsurroundings, is the (-) sign only there to account for the idea of work being done vs by a system?