Search found 13 matches

by Nataliya Karashchuk
Sat Mar 12, 2016 2:17 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Comparing heat capacities
Replies: 1
Views: 463

Comparing heat capacities

Why does ethane have a higher heat capacity than ethene, which has a double bond?
by Nataliya Karashchuk
Sat Mar 12, 2016 2:08 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: Residual Entropy Comparisons
Replies: 1
Views: 307

Residual Entropy Comparisons

First of all what exactly does residual entropy mean, and how can you compare the entropy of two different molecules? In one of the finals there was a question that asked to compare the residual entropy of NO and BF3, how come NO has more?
by Nataliya Karashchuk
Mon Mar 07, 2016 7:40 pm
Forum: *Carboxylic Acids
Topic: Functional groups vs. Substituents
Replies: 2
Views: 2727

Functional groups vs. Substituents

What is the difference between a functional group and a substituent? Would carboxylic be considered just a functional group or would it also be a substituent?
by Nataliya Karashchuk
Thu Mar 03, 2016 10:08 am
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: The A in the Arrhenius Equation
Replies: 1
Views: 286

The A in the Arrhenius Equation

When we use the Arrhenius Equation, what is the A and how do we estimate a value for it if we want to solve for activation energy and are not given the A?
by Nataliya Karashchuk
Sun Feb 28, 2016 12:44 pm
Forum: *Alkenes
Topic: Double Bond and Placement
Replies: 2
Views: 409

Double Bond and Placement

If the double bond is placed within an R group, would the structure still be an alkene or does the double bond have to be in the parent chain structure? I'm just wondering where the double bond has to be or whether it doesn't matter and the fact that there is a double bond automatically classifies t...
by Nataliya Karashchuk
Tue Feb 23, 2016 2:37 pm
Forum: *Free Energy of Activation vs Activation Energy
Topic: Relation of delta G to multistep Ea
Replies: 1
Views: 301

Relation of delta G to multistep Ea

When a reaction has a profile similar to the example in the textbook where the reaction is a 2 step process with the first step including bond breaking and the second step involving bond making, why is it there still activation energy required for bond making? Doesn't it release energy instead?
by Nataliya Karashchuk
Sun Feb 21, 2016 10:53 pm
Forum: General Rate Laws
Topic: Rate = k[A][B] vs rate = -1/a d[A]/dt
Replies: 2
Views: 432

Re: Rate = k[A][B] vs rate = -1/a d[A]/dt

Going off of this, how is Rate=k[A][B] derived from the Rate=-1/a d[A]/dt and is that beyond the scope of this class? I don't really understand the link between the equations
by Nataliya Karashchuk
Mon Feb 08, 2016 1:08 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7951
Views: 1213145

Re: Chemistry Jokes

If Avogadro calls tell him to leave his number
by Nataliya Karashchuk
Sun Jan 24, 2016 6:11 pm
Forum: Calculating Work of Expansion
Topic: Work of Reversible Expansion in relation to isothermality
Replies: 1
Views: 256

Work of Reversible Expansion in relation to isothermality

When doing problems that state that a reaction is reversible, how does the factor that it's isothermal factor in? How would the equation differ if it was isochoric or isobaric?
by Nataliya Karashchuk
Sun Jan 24, 2016 6:07 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7951
Views: 1213145

Re: Chemistry Jokes

Image
by Nataliya Karashchuk
Sun Jan 10, 2016 9:33 pm
Forum: Phase Changes & Related Calculations
Topic: Reversible and Irreversible Processes
Replies: 4
Views: 528

Reversible and Irreversible Processes

What exactly is the difference between reversible and irreversible processes? They have different equations but how can the differences be logically explained?
by Nataliya Karashchuk
Fri Nov 27, 2015 6:13 pm
Forum: Naming
Topic: Video: Coordination Compounds
Replies: 1
Views: 295

Video: Coordination Compounds

Uploaded by Nataliya Karashchuk as an mp4 file. A video describing coordination compounds from the basics to naming to the biological importance.
by Nataliya Karashchuk
Mon Oct 05, 2015 9:49 pm
Forum: *Shrodinger Equation
Topic: What exactly do we need to know about Schrodinger equation?
Replies: 4
Views: 529

Re: What exactly do we need to know about this?

Going off of this, what exactly is Schrodinger's equation doing in relation to the derivative and energy? Is it also important to know? Or do we simply focus on the wave function?

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