Search found 10 matches

by breinhardt3G
Thu Mar 02, 2017 6:42 pm
Forum: Resonance in Organic Compounds
Topic: Naming: Chains vs. rings
Replies: 1
Views: 800

Re: Naming: Chains vs. rings

Depending on how long the chain is, you would name the compound based on the chain. The ring would then be considered a substituent. But if the ring has more carbons than the chain, then the chain would be considered a substituent.
by breinhardt3G
Thu Mar 02, 2017 12:47 pm
Forum: *Organic Reaction Mechanisms in General
Topic: Solution is "decolorized" (Quiz 3 Prep)
Replies: 1
Views: 295

Re: Solution is "decolorized" (Quiz 3 Prep)

So the answer is actually the last option (you misread, the last option in the course reader actually reads "Br2 acts as an electrophile.") The reason being is that the ethene molecule is electron rich with its double bond so in the halogenation reaction, the electrons from the double bond...
by breinhardt3G
Thu Mar 02, 2017 12:32 pm
Forum: *Cycloalkanes
Topic: Naming cycloalkanes with 2/+ substituents?
Replies: 1
Views: 293

Re: Naming cycloalkanes with 2/+ substituents?

No, you indicate which carbon should be your primary carbon based on the order in which you can achieve the lowest number associated with each substituent. If you look at the example, you can see that the correct numbering is the one in which the substituents have the lowest carbon number, not which...
by breinhardt3G
Thu Mar 02, 2017 11:55 am
Forum: *Organic Reaction Mechanisms in General
Topic: Types of Organic Reactions
Replies: 1
Views: 317

Re: Types of Organic Reactions

In class, we went over electrophilic addition reactions and nucleophilic substitution reactions. There are plenty of different types of reaction mechanisms, but these are the ones we went over and I'm pretty sure we just have to worry about these for the quiz. The reaction in question 5 is an electr...
by breinhardt3G
Wed Feb 22, 2017 10:13 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Pre-Equilibrium
Replies: 2
Views: 441

Re: Pre-Equilibrium

Basically, when the slow step involves an intermediate you use the fast step to solve for the concentration of that intermediate and use that substitution to write the rate law of the overall reaction. You can look at the example in the course reader for reference, but try looking at is as a substit...
by breinhardt3G
Wed Feb 22, 2017 10:05 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Activation energy
Replies: 3
Views: 396

Re: Activation energy

No, it just means that an increase in temperature won't raise k as much because not as much heat is required to overcome the lower Ea.
by breinhardt3G
Mon Feb 06, 2017 3:24 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Single electrode redox
Replies: 1
Views: 304

Re: Single electrode redox

If you look at the standard reduction potentials (pg A17 in Appendix 2 in the book) the reduction half-reactions are listed in order of strongly oxidizing to strongly reducing. The stronger the reduction rxn (more positive voltage) and the less favorable the oxidation rxn (less positive voltage) the...
by breinhardt3G
Mon Feb 06, 2017 3:16 pm
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: Ch 14 q 55
Replies: 2
Views: 462

Re: Ch 14 q 55

2H20 + 2e- --> H2 + 2OH- has a negative reduction potential because this chemical equation shows a reduction reaction (H+ from the H2O molecule is being reduced to H2 with and oxidation number of 0) As a result, this reaction would not be a suitable candidate for the anode because it is not a strong...
by breinhardt3G
Sat Feb 04, 2017 2:39 pm
Forum: Balancing Redox Reactions
Topic: Chapter 14.5 part d
Replies: 2
Views: 366

Re: Chapter 14.5 part d

Half rxns: 12e- + 12H2O + P4 --> 4PH3 + 12OH- Reduction (multiplied by 4) 8OH- + P4 --> 4H2PO2- +4e- Oxidation (multiplied by 12) _______________________________________ 48H2O + 16P4 + 96OH- --> 16PH3 + 48H2PO2 + 48OH- Divide the equation by 16 3H2O + P4 + 3OH- --> PH3 + 3H2PO2-
by breinhardt3G
Sat Feb 04, 2017 2:27 pm
Forum: Balancing Redox Reactions
Topic: Salt bridge
Replies: 3
Views: 428

Re: Salt bridge

In a galvanic cell the spontaneous redox rxn creates the flow of electricity (which is produced by the flow of electrons from the anode- which is negative due to electron build up- to the cathode- which is positive since it is gaining electrons) The salt bridge is what joins the halves of the electr...

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