Search found 8 matches

by Laura_funes_1j
Sat Mar 18, 2017 1:18 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7768
Views: 1072516

Re: Post All Chemistry Jokes Here

Organic chemistry is difficult. Those who study it have alkynes of trouble.
by Laura_funes_1j
Sat Mar 11, 2017 7:28 pm
Forum: *Alkanes
Topic: 1.16 Ch.1 Organic Textbook Question
Replies: 2
Views: 321

Re: 1.16 Ch.1 Organic Textbook Question

The prefixes you ignore when alphabetizing are di-, tri-, tetra-...
Iso and neo are part of the group name so they are alphabetized.
by Laura_funes_1j
Sun Mar 05, 2017 9:53 pm
Forum: *Alkynes
Topic: 1.5 (c)
Replies: 3
Views: 648

Re: 1.5 (c)

I'm not quite sure what example you are talking about but you can tell it is an alkyne because of the triple bond. Also, you can tell that it is an alkyne because of the molecular formula C(n)H(2n-2) Are you talking about the structure? If so, you would have something like C /// \ H-C C-H-H-H (The f...
by Laura_funes_1j
Sun Feb 26, 2017 7:59 pm
Forum: *Organic Reaction Mechanisms in General
Topic: "No charge separation" meaning? [ENDORSED]
Replies: 3
Views: 3159

Re: "No charge separation" meaning? [ENDORSED]

Resonance structures are used instead of single Lewis structures to better show the delocalized electrons in a molecule. For resonance structures, we want to minimize the charge so we want to minimize charge separation. Charge separation is basically the amount of positive and negative charges in a ...
by Laura_funes_1j
Fri Feb 10, 2017 10:41 pm
Forum: Balancing Redox Reactions
Topic: Redox Reaction question in Practice Midterm [ENDORSED]
Replies: 2
Views: 1155

Redox Reaction question in Practice Midterm [ENDORSED]

Midterm Winter 2016
The following reaction is used in the acidic solution in the Breathalyzer test to determine the level of alcohol in the blood:

H+(aq) + (Cr2O7)-2(aq) + C2H5OH(aq) ---> (Cr)3+(aq) + C2H4O(aq) + H2O(l)

I need help figuring out how to get a balanced redox equation
by Laura_funes_1j
Sun Feb 05, 2017 11:37 pm
Forum: Balancing Redox Reactions
Topic: Oxygen Ion Charge
Replies: 3
Views: 683

Re: Oxygen Ion Charge

In addition, oxygen can even have a -.5 charge in superoxides.
by Laura_funes_1j
Sun Jan 29, 2017 5:03 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Spontaneous Reactions
Replies: 4
Views: 534

Re: Spontaneous Reactions

Spontaneous reactions are usually exergonic, meaning that energy flows from the system to the surroundings. The energy released, free energy, can be used to do work.
by Laura_funes_1j
Sun Jan 15, 2017 11:46 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Reaction Enthalpies
Replies: 1
Views: 193

Re: Reaction Enthalpies

I got 245.4 kJ
I'm not too sure of the limiting reagent though

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