Search found 10 matches

by Brandon_Goenawan2O
Fri Mar 17, 2017 1:19 pm
Forum: *Alkanes
Topic: Organic molecule formulas
Replies: 2
Views: 566

Organic molecule formulas

Hi,

Does anyone know if we supposed to memorize all the general molecular formulas between alkanes, alkenes, alkynes, and all the cyclo structures?
Thanks in advance.
by Brandon_Goenawan2O
Sat Mar 11, 2017 11:13 am
Forum: *Alkenes
Topic: Naming alkenes [ENDORSED]
Replies: 2
Views: 383

Naming alkenes [ENDORSED]

Hello, I have a question regarding the naming of an alkene. On page 12 of the organic chemistry textbook there is a molecule named 1,3-But-a-diene. I understand the prefix signifies the 4 carbon parent chain and the diene represents the 2 carbon carbon double bonds on carbon 1 and 3, but what does t...
by Brandon_Goenawan2O
Sat Mar 04, 2017 4:08 pm
Forum: *Nucleophiles
Topic: Ambident Nucleophile [ENDORSED]
Replies: 1
Views: 261

Ambident Nucleophile [ENDORSED]

Hello,

I was wondering what is the key determining factor that allows some molecule to be ambident nucleophiles whereas others are not so easily characterized that way?
Thanks in advance.
by Brandon_Goenawan2O
Thu Feb 23, 2017 11:03 pm
Forum: General Rate Laws
Topic: Catalyst
Replies: 3
Views: 405

Catalyst

Hello,

I am a little uncertain about catalysts and rate laws. I understand they do not alter the rate constant in a zero order reaction as seen in the course reader but do they affect rate laws in higher orders?
Thanks in advance.
by Brandon_Goenawan2O
Fri Feb 17, 2017 8:59 pm
Forum: General Rate Laws
Topic: Kinetics
Replies: 1
Views: 211

Kinetics

Hi,

Can someone explain the difference between the rate constants k and k prime.
Thanks in advance.
by Brandon_Goenawan2O
Sat Feb 11, 2017 4:48 pm
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: Nernst Equation [ENDORSED]
Replies: 1
Views: 230

Nernst Equation [ENDORSED]

Can someone please explain why problem 14.97 assumes the cell potential is negative, indicating a non galvanic cell? The question never states electrolysis occurs.

Thanks in advance
by Brandon_Goenawan2O
Fri Feb 03, 2017 5:15 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: Calculating entropy
Replies: 1
Views: 197

Calculating entropy

Hi, I am having a difficulty understanding which equation to use when calculating the change in entropy when temperature changes. The first equation being n*R*natural log(T2/T1) and the second equation is n* Cs(specific heat)*natural log(T2/T1)? Can anyone explain which conditions are needed to use ...
by Brandon_Goenawan2O
Sat Jan 28, 2017 1:14 am
Forum: Gibbs Free Energy Concepts and Calculations
Topic: Units for Gibbs free energy
Replies: 1
Views: 217

Units for Gibbs free energy

Does anyone know if the standard Gibbs free energy of a reaction should be written in joules per mole or just joules? Is it similar to how we address the units for standard reaction enthalpies?

Thanks
by Brandon_Goenawan2O
Sat Jan 21, 2017 9:10 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 908324

Re: Post All Chemistry Jokes Here

If I were an endothermic chemical reaction at equilibrium, you would push me to the right because you are hot:)
by Brandon_Goenawan2O
Wed Jan 11, 2017 10:51 pm
Forum: Phase Changes & Related Calculations
Topic: Thermochemistry
Replies: 1
Views: 248

Thermochemistry

Hey guys, I'm slightly confused on this topic. What is the difference between the standard enthalpy of a reaction versus the standard enthalpy of formation?
Can someone please explain.
Thanks.

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