Search found 10 matches

by Sakina_Qadir_3K
Fri Mar 17, 2017 2:20 pm
Forum: *Cycloalkenes
Topic: When to use Z vs. E?
Replies: 4
Views: 1232

Re: When to use Z vs. E?

In most cases, I believe you use Z when it is "cis" (which means on the same side) and use E when it is "trans"(which means on opposite sides). Hope that helps!
by Sakina_Qadir_3K
Thu Mar 09, 2017 7:53 pm
Forum: *Alkanes
Topic: Reaction Profiles
Replies: 3
Views: 445

Reaction Profiles

When drawing a reaction profile, what determines whether the products are higher/lower than the reactants?
by Sakina_Qadir_3K
Thu Mar 02, 2017 10:27 pm
Forum: *Alkanes
Topic: Naming/Numbering Compounds
Replies: 1
Views: 317

Naming/Numbering Compounds

For a compound exhibiting both a triple bond, and a carbonyl functional group which one would get prioritized when numbering?
by Sakina_Qadir_3K
Thu Feb 23, 2017 8:03 pm
Forum: General Rate Laws
Topic: Course reader pg 73 example
Replies: 2
Views: 354

Re: Course reader pg 73 example

Yes you are correct! The 2 in front of the reaction constant is there because there are 2 NO2 formed. And yes, the intermediate is the product of the reaction for a fast step and is the reactant of the slow step.
by Sakina_Qadir_3K
Thu Feb 16, 2017 1:11 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8263
Views: 1445518

Re: Post All Chemistry Jokes Here

In a sports relay race, a chemical kinetics specialist runs slowly, and his group loses the race.

When the chemical kinetics specialist is asked why he ran slowly, his reply was “I always wanted to be the significant rate determining step”.
by Sakina_Qadir_3K
Thu Feb 09, 2017 10:25 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: 14.11
Replies: 2
Views: 410


For part b in this textbook question, why can we ignore C(gr) and Pt(s) when forming the half-reaction equations? Additionally, what is the purpose of those two elements?

by Sakina_Qadir_3K
Thu Feb 02, 2017 3:18 pm
Forum: Phase Changes & Related Calculations
Topic: Change in internal energy= 0
Replies: 4
Views: 573

Re: Change in internal energy= 0

One of the conditions when internal energy is zero is when the system has no temperature change, more specifically when the question says "isothermal".
by Sakina_Qadir_3K
Wed Jan 25, 2017 10:25 pm
Forum: Third Law of Thermodynamics (For a Unique Ground State (W=1): S -> 0 as T -> 0) and Calculations Using Boltzmann Equation for Entropy
Topic: Positional/Residual Entropy
Replies: 1
Views: 329

Positional/Residual Entropy

In the textbook, problem 25, the n value the book uses is 6.02x10^23. I don't understand why Avagadro's number is used rather than a whole number, is this because the question says the arrangement is in "crystal form" or is it something else? (The n value I am referring to is from the Bolt...
by Sakina_Qadir_3K
Thu Jan 19, 2017 12:54 am
Forum: Phase Changes & Related Calculations
Topic: Textbook Question [ENDORSED]
Replies: 1
Views: 390

Textbook Question [ENDORSED]

When we are calculating the standard enthalpy of formation and we are not given a net equation, how do we go about solving the problem? More specifically I am referring to question 8.65 from the textbook.
by Sakina_Qadir_3K
Thu Jan 12, 2017 11:36 pm
Forum: Phase Changes & Related Calculations
Topic: Question about Enthalpy
Replies: 4
Views: 448

Re: Question about Enthalpy

I also had a question about enthalpy, will there ever be a scenario where we are solving for it but the pressure is not constant?

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