Search found 19 matches

by chemgal4L
Sun Mar 13, 2016 12:55 pm
Forum: *Amines
Topic: Priority
Replies: 3
Views: 830

Priority

Do amines have priority over double or triple bonds?
by chemgal4L
Sat Mar 05, 2016 4:58 pm
Forum: *Cyclopropanes and Cyclobutanes
Topic: Bond Angle Strain vs. Torsional Strain
Replies: 8
Views: 1531

Re: Bond Angle Strain vs. Torsional Strain

what exactly does orthogonal to each other mean..?
by chemgal4L
Mon Feb 29, 2016 2:57 pm
Forum: *Alkanes
Topic: Naming alkanes
Replies: 2
Views: 302

Re: Naming alkanes

I think it would be 4,5 giving th slowest number first and then you look at the "m" in dimethylethyl for alphabetical purposes.
by chemgal4L
Thu Feb 18, 2016 9:15 pm
Forum: *Electrophiles
Topic: Drawing the organic molecules
Replies: 2
Views: 422

Re: Drawing the organic molecules

If you determine which atom is more electronegative, you will be able to determine where the electron will most likely be attracted to. So you draw the molecule like a lewis structure, but you will be able to see where the electrons are drawn towards.
by chemgal4L
Fri Feb 12, 2016 12:10 pm
Forum: Kinetics vs. Thermodynamics Controlling a Reaction
Topic: Reaction rate
Replies: 3
Views: 520

Re: Reaction rate

If looking at the reversed reaction, does the rate depend on the reactants that were the products, or does it still depend on the original reactants?
by chemgal4L
Tue Feb 02, 2016 10:02 pm
Forum: Balancing Redox Reactions
Topic: Half-Reactions
Replies: 3
Views: 509

Re: Half-Reactions

I think you determine which atoms are being oxidized and which are being reduced, and based off that you can determine the separate half reactions.
by chemgal4L
Thu Jan 21, 2016 9:51 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: Entropy
Replies: 3
Views: 645

Re: Entropy

What kind of problems require the use of residual entropy?
by chemgal4L
Fri Jan 15, 2016 9:15 am
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Heat Capacity
Replies: 3
Views: 492

Re: Heat Capacity

How do you find the specific heat capacity if only the heat capacity is provided?
by chemgal4L
Fri Jan 08, 2016 10:51 am
Forum: Phase Changes & Related Calculations
Topic: Hess's Law
Replies: 8
Views: 1028

Re: Hess's Law

When you use the method of using the bond energies, do you add the left side of the equation to the right side, or subtract the right side from the left side?
by chemgal4L
Mon Nov 23, 2015 3:11 pm
Forum: Balancing Chemical Reactions
Topic: Video: balancing chemical equations
Replies: 2
Views: 711

Video: balancing chemical equations

Here is a video of examples for balancing chemical equations.
by chemgal4L
Mon Nov 23, 2015 2:45 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: Strengths of Acids
Replies: 3
Views: 532

Re: Strengths of Acids

Is there a conceptual reason behind this? I understand the rule that with a greater s orbital, the higher acidity of the acid, but why is this exactly?
by chemgal4L
Fri Nov 20, 2015 2:58 pm
Forum: Naming
Topic: Ending differences
Replies: 1
Views: 373

Ending differences

When naming coordination complexes, is there a difference between for example chloro and chlorido? Because I've seen both and I don't know whether they are used interchangeably or for specific situations
by chemgal4L
Tue Nov 10, 2015 1:12 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Writing oxidation numbers for transition metals
Replies: 2
Views: 474

Re: Writing oxidation numbers for transition metals

I think the correct way to write oxidation number is to have the + or - before the number, so +3 rather than 3+
by chemgal4L
Tue Nov 10, 2015 1:09 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Electron configurations for ions
Replies: 4
Views: 682

Electron configurations for ions

I have a really hard tim figuring out the electron configurations for ions. How do you know whether the ion will lose valence electrons from the d orbital first or if it will lose them from the s orbital first. I know there are exceptions to copper and chromium, but how about all of the other d bloc...
by chemgal4L
Tue Nov 10, 2015 1:06 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: acid/base
Replies: 1
Views: 313

acid/base

Does the shape of a molecule ever have the ability to determine whether the molecule will act as a lewis acid or base?
by chemgal4L
Mon Oct 26, 2015 11:55 am
Forum: Hybridization
Topic: Easy trick for hybridization
Replies: 1
Views: 452

Easy trick for hybridization

Hi! Just wanted to share a trick our TA shared with us to determine hybridization. If you have a central atom, lets say in CCl4, C is the central atom, and it is EX4, you can use the "4" to help you determine hybridization: you need as many letters in the hybridization as the number in the...
by chemgal4L
Mon Oct 26, 2015 11:51 am
Forum: Resonance Structures
Topic: Formal Charges
Replies: 3
Views: 629

Re: Formal Charges

I'm a little bit confused as to how you determine which resonance structure is the most stable. Do you have to find the formal charge of each specific atom and see how they differ, or do you find the formal charge of the entire molecule and choose the one that's closest to zero? Or is that the same ...
by chemgal4L
Mon Oct 26, 2015 11:48 am
Forum: Sigma & Pi Bonds
Topic: Valence electron configurations
Replies: 4
Views: 822

Re: Valence electron configurations

All you do is count the electrons in the specific orbitals. So for Chlorine for example, you see that the firs ts orbital (the top two squares on the periodic table are filled) so you have 1s2, then you see that the second s orbital (Li and Be) is also filled, so you have 2s2, and the 2p orbital is ...
by chemgal4L
Fri Oct 02, 2015 11:51 am
Forum: Empirical & Molecular Formulas
Topic: Finding molecular formula
Replies: 2
Views: 448

Finding molecular formula

When finding the molecular formula of a compound, why is it necessary to divide all the moles, by the smallest amount of moles?

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