Search found 12 matches

by zricciardulli
Mon Mar 07, 2016 3:49 pm
Forum: *Constitutional and Geometric Isomers (cis, Z and trans, E)
Topic: Cis and trans Vs. Z and E
Replies: 3
Views: 430

Cis and trans Vs. Z and E

are these prefixes interchangeable? For example is naming something "cis 2,4dimethyl pentane" the same as "E 2,4 dimethyl pentane"? I'm confused as when to use one versus the other.
by zricciardulli
Mon Mar 07, 2016 3:45 pm
Forum: *Free Energy of Activation vs Activation Energy
Topic: Is activation energy a constant?
Replies: 3
Views: 1002

Is activation energy a constant?

in other words, would temperature or pressure, etc... Affect the value of activation energy?
by zricciardulli
Mon Mar 07, 2016 3:42 pm
Forum: *Cyclohexanes (Chair, Boat, Geometric Isomers)
Topic: Conformation of the 4 carbons that form the "seat" of chair
Replies: 1
Views: 273

Conformation of the 4 carbons that form the "seat" of chair

are the 4 carbon "seat" of the chair exactly planar? If so does their eclipsed hydrogen not have enough strain to cause a different shape?
by zricciardulli
Wed Mar 02, 2016 8:27 pm
Forum: *Cycloalkanes
Topic: Two cycloalkanes attached to each other
Replies: 12
Views: 5359

Two cycloalkanes attached to each other

One example in the book we werent asked to name but 2 cyclohexane were combined to one another. Apparently, its called biphenyl. Just want to confirm that we wouldnt be asked to name anything like that on the quiz/final
by zricciardulli
Wed Feb 17, 2016 8:05 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Arrhenius Eq. and gas state reactions
Replies: 1
Views: 297

Arrhenius Eq. and gas state reactions

So the Arrhenius eq. contains the gas constant, which makes me think this only would work for Gas phase reactions. Would the equation work for solid state or precipitation reactions?
by zricciardulli
Mon Feb 08, 2016 3:28 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Ecell=Eright-Eleft Confusion
Replies: 1
Views: 473

Ecell=Eright-Eleft Confusion

I'm just a little confused on this equation. That equation is if both half reactions are written as a reduction reaction right? Otherwise, we can just add one reduction reaction cell potential to a oxidation cell potential and calculate Ecell that way right?
by zricciardulli
Sun Feb 07, 2016 8:16 pm
Forum: Balancing Redox Reactions
Topic: Molecule being both reduce and oxidized
Replies: 1
Views: 186

Molecule being both reduce and oxidized

In homework problem 14.3, Cl2->Cl- +HClO is the reaction we are asked to find which is the oxidation agent and the reducing agent. Because there is only one reactant, it must be both the ox. agent and the red. agent as long as there are electrons being transferred correct? We wouldnt have to write a...
by zricciardulli
Mon Jan 25, 2016 12:05 pm
Forum: Calculating Standard Reaction Entropies (e.g. , Using Standard Molar Entropies)
Topic: Why is delta S of monoatomic molecules not zero?
Replies: 1
Views: 240

Why is delta S of monoatomic molecules not zero?

I understand why Delta H of elemental molecules is zero, but it seems less obvious why delta S of these have values. Also, is the delta G of formation of elemental molecules not zero as well?
by zricciardulli
Thu Jan 14, 2016 5:14 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Calorimetry and delta T (homework problem 8.19)
Replies: 2
Views: 477

Calorimetry and delta T (homework problem 8.19)

In problem 8.19 there is a 500g copper tea kettle filled with water, and we are supposed to see how much heat is used to bring 400g of water from 22 C to 100 C. The solution manual says to do the following: q=(mass of copper)(Specific heat Cap. of copper)(delta T)+(mass of water)(spec heat cap of wa...
by zricciardulli
Fri Jan 08, 2016 2:13 pm
Forum: Phase Changes & Related Calculations
Topic: Definition of a State Function
Replies: 2
Views: 309

Definition of a State Function

What exactly does Prof Lavelle mean when he says state function and why does this allow for some things (like changing enthalpy for a forward or reverse reaction) but not others (like work)?
by zricciardulli
Tue Dec 01, 2015 12:14 pm
Forum: Naming
Topic: Example problems of naming coordination complexes
Replies: 1
Views: 314

Example problems of naming coordination complexes

https://drive.google.com/open?id=0B45-Xpqa63r5VTlUMUlFcHRoLTQ"onclick="window.open(this.href);return false; A couple examples for naming coordination complexes. I uploaded this earlier a different way and it failed to submit, hope this one works! Here's a couple rules that weren't completely clear i...
by zricciardulli
Tue Oct 27, 2015 6:13 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Difference between MO diagram after O2 and before O2
Replies: 1
Views: 246

Difference between MO diagram after O2 and before O2

I was reading the book and it says Oxygen and onward have the template of the sigma bond coming first in the 2p part of the diagram. Before oxygen the 2 pi bonds come first for the 2p part of the diagram.

Why is the pi the lower energy bond in this case?

Go to advanced search