Search found 16 matches

by anthonyhc3I
Sat Mar 12, 2016 6:23 pm
Forum: *Alkanes and Substituted Alkanes (Staggered, Eclipsed, Gauche, Anti, Newman Projections)
Topic: Positive/negative rotation?
Replies: 2
Views: 587

Positive/negative rotation?

Let's say you are asked to draw a Newman Projection with the angle +60 degrees. Would there be any noticeable difference if the angle was negative?
by anthonyhc3I
Thu Mar 10, 2016 1:09 am
Forum: *Ethers
Topic: Naming priority?
Replies: 1
Views: 344

Naming priority?

I know that ethers are treated priority wise like substituents, I was wondering if there were any other exceptions in priority in other functional groups? Is ether the only functional group that does not have high priority in naming?
by anthonyhc3I
Tue Mar 08, 2016 1:39 am
Forum: *Alkenes
Topic: Sum of numbers
Replies: 1
Views: 377

Sum of numbers

In naming alkanes I know that you do not sum the numbers to determine which numbers to use in naming organic molecules but is this case true for alkenes as well?
by anthonyhc3I
Sun Mar 06, 2016 4:03 pm
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: Determing salt bridge
Replies: 4
Views: 618

Determing salt bridge

I know inert electrodes are named first and last in naming the reaction but for instance if there isn't a inert electrode named specifically are we supposed to assume there is one and name a general inert electrode?
by anthonyhc3I
Sun Mar 06, 2016 3:58 pm
Forum: *Constitutional and Geometric Isomers (cis, Z and trans, E)
Topic: How to you determine cis or trans for multiple chains?
Replies: 1
Views: 357

How to you determine cis or trans for multiple chains?

I understand that cis means same side and trans means opposing but when dealing with more complex molecules, with multiple carbon chains, how do you determine cis or trans?
by anthonyhc3I
Tue Mar 01, 2016 8:25 pm
Forum: *Organic Reaction Mechanisms in General
Topic: Charge on Lewis structure?
Replies: 1
Views: 365

Charge on Lewis structure?

I was working through some practice problems and I came across this one, draw the lewis structure of N3 -. The solution is a lewis structure with central molecule N+ with double bonds to two respective N-. What I don't understand is how you determine the charge for each molecule.
by anthonyhc3I
Sat Feb 27, 2016 10:54 pm
Forum: *Constitutional and Geometric Isomers (cis, Z and trans, E)
Topic: Assigning Priority clarification
Replies: 1
Views: 285

Assigning Priority clarification

On page 16 in the Organic Chem book Toolbox 1.1, I understand that priority is based on the atomic number of the atom bound to the sp2 carbon atom but I don't understand the use of splitting double or triple bonds into single bonds as it shows in point 4. Can someone explain why it is useful to expa...
by anthonyhc3I
Sat Feb 27, 2016 10:16 pm
Forum: *Alkanes
Topic: General rule for direction
Replies: 3
Views: 391

General rule for direction

I understand that in naming organic compounds that you always name the compound by assigning the lowest possible numbers. But I am a little confused in how you determine which direction you name the compound. For in example if you analyze a line structure, how would one determine whether to name the...
by anthonyhc3I
Wed Jan 20, 2016 12:44 am
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Reversible systems clarification
Replies: 2
Views: 514

Reversible systems clarification

The textbook mentions that reversible processes are those that can be reversed by an infinitely small change in a variable. How does this directly translate into how reversible processes tend to do more work than irreversible processes?
by anthonyhc3I
Wed Jan 13, 2016 10:14 am
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Work of expansion question?
Replies: 3
Views: 679

Work of expansion question?

I know that W = F x D and because F = P x A, W = P x change in V. What I don't understand is that once we attain this equation, the equation is stated to be W = -P x change in V. Why is there a negative sign in front of P and what is its significance?
by anthonyhc3I
Sun Nov 22, 2015 7:35 pm
Forum: Ideal Gases
Topic: Ideal Gas Law
Replies: 2
Views: 513

Ideal Gas Law

I understand that the ideal gas law is PV=nRT and what each variable represents but I do not understand how to derive the relationships between pressure, volume, temperature etc. such as how pressure is inversely related to volume.
by anthonyhc3I
Sun Nov 15, 2015 5:22 pm
Forum: Naming
Topic: Ambiguity in naming?
Replies: 1
Views: 307

Ambiguity in naming?

In the textbook on page 741, Toolbox 17.1, number 6, [Fe(NCS)(OH2)5]2 is named "thiocyanato pentaaqua(III) iron". I thought that to name the complex, ligands are named alphabetically so it would be pentaaqua(III) thiocyanato iron or does it not matter in this case?
by anthonyhc3I
Sun Oct 25, 2015 9:01 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Determining bond angles
Replies: 2
Views: 380

Determining bond angles

I understand that in a nonpolar molecule like CF4, the bond angles are 109.5 degrees due to its tetrahedral shape and that if one of the F atoms gets replaced by a halogen with a bigger radius like Cl, the bond angles in respect to the F molecules become slightly lower than 109.5 degrees. My questio...
by anthonyhc3I
Mon Oct 19, 2015 1:13 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Electron Repulsion in regards to VSEPR
Replies: 1
Views: 355

Electron Repulsion in regards to VSEPR

Can someone explain to me why the position of lone pairs of electrons around a central atom affect the bond angles in a molecule? What role does electron repulsion play in determining molecular shape?
by anthonyhc3I
Sun Oct 11, 2015 11:43 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Rydberg vs. Bohr equation for hydrogen atom
Replies: 1
Views: 3365

Rydberg vs. Bohr equation for hydrogen atom

Instead of using the bohr equation for hydrogen atoms to find the principle quantum level from which electrons transition, the rydberg equation can be used correct? In other words, either equation can be used? (Refer to #10 from the fall 2014 quiz 1 preparation)

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