Search found 21 matches

by Samuel_Vydro_1I
Sun Mar 12, 2017 7:01 pm
Forum: *Organic Reaction Mechanisms in General
Topic: Question 4.30 in the organic chem book
Replies: 2
Views: 410

Re: Question 4.30 in the organic chem book

Yeah it could theoretically occur but it is just asking you to infer the most likely scenario
by Samuel_Vydro_1I
Sun Mar 12, 2017 6:59 pm
Forum: *Organic Reaction Mechanisms in General
Topic: Transition Steps
Replies: 7
Views: 808

Re: Transition Steps

All bonds affected by arrows are shows as dashed
by Samuel_Vydro_1I
Sun Mar 12, 2017 6:51 pm
Forum: *Nucleophiles
Topic: Ambident
Replies: 2
Views: 525

Re: Ambident

I don't know if we will have to go to this extent on the final
by Samuel_Vydro_1I
Sun Mar 12, 2017 6:48 pm
Forum: *Electrophiles
Topic: nucleophile vs electrophile
Replies: 2
Views: 610

Re: nucleophile vs electrophile

OH- is a nucleaphile because it has three lone pairs that readily available to bond
by Samuel_Vydro_1I
Sun Mar 12, 2017 6:47 pm
Forum: *Electrophiles
Topic: Nucleophile vs Electrophile
Replies: 5
Views: 1032

Re: Nucleophile vs Electrophile

Nucleophile is simply a fancy way of saying -- molecule that has a lone pair to bond with a molecule that needs an electron. Electrophile is a fancy way of saying-- molecule that needs an electron. Cl to Cl- is something you can remember from 14a
by Samuel_Vydro_1I
Sun Mar 12, 2017 6:35 pm
Forum: Arrhenius Equation, Activation Energies, Catalysts
Topic: Catalyst that is used and produced
Replies: 4
Views: 466

Re: Catalyst that is used and produced

Well the more catalyst, the more reactant it can catalyze. A lot of enzyme use surface area, moree enzyme means more surface area
by Samuel_Vydro_1I
Sun Mar 12, 2017 6:32 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Relationship between activation energy and pseudo delta g
Replies: 2
Views: 740

Re: Relationship between activation energy and pseudo delta g

Your confusion may strain from the fact that the deltaG is taken from reactant to maxima of a TS while Ea is first from reactant to TS1 in a two step and then from the intermediates to TS2. deltaG disregards the intermediates as a starting point of measurement
by Samuel_Vydro_1I
Sun Mar 12, 2017 6:26 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: ch15 #51
Replies: 3
Views: 370

Re: ch15 #51

Yes, as the questions on the Quizzes, the slow step governs the entirety of the reaction. When you see a reaction that is slow then fast, ONLY look at the slow step to determine rate law. Nice general rule
by Samuel_Vydro_1I
Sun Mar 12, 2017 6:22 pm
Forum: First Order Reactions
Topic: Determining Overall Reaction Rate
Replies: 3
Views: 343

Re: Determining Overall Reaction Rate

Such as when given a question regarding a table of values (COncentrations, Rates, Etc.) and you are asked to find the order of each substance and the overall order. It is important to remember to add the overall exponents at the end to find overall rate. Each individual order only relates to the spe...
by Samuel_Vydro_1I
Sun Mar 12, 2017 6:19 pm
Forum: Zero Order Reactions
Topic: Units [ENDORSED]
Replies: 7
Views: 914

Re: Units [ENDORSED]

Divide by Molarity for each order essentially
by Samuel_Vydro_1I
Sun Dec 04, 2016 2:21 am
Forum: *Making Buffers & Calculating Buffer pH (Henderson-Hasselbalch Equation)
Topic: homework question 13.5
Replies: 1
Views: 513

Re: homework question 13.5

NaCl has no effect because the Na and Cl are salts of a strong acid and strong base
by Samuel_Vydro_1I
Sun Dec 04, 2016 2:16 am
Forum: *Making Buffers & Calculating Buffer pH (Henderson-Hasselbalch Equation)
Topic: 2014 final #8
Replies: 2
Views: 554

Re: 2014 final #8

A higher pH corresponds to a higher amount of base as shown
by Samuel_Vydro_1I
Sun Dec 04, 2016 2:14 am
Forum: *Making Buffers & Calculating Buffer pH (Henderson-Hasselbalch Equation)
Topic: Significant Figures for pH
Replies: 1
Views: 486

Re: Significant Figures for pH

the sig figs for pH is the total like as in the 12 in 12.34. that is always unaffected. Starting with the decimal point, it is the number of sig figs in the value that was log'ed. so as log(2.73 ×10–5) = –4.564. The 2.73 is three sig figs for there must be three sig figs after the decimal point.
by Samuel_Vydro_1I
Mon Nov 14, 2016 8:00 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Do we include (aq) in equilibrium equation?
Replies: 3
Views: 426

Re: Do we include (aq) in equilibrium equation?

The K equation deals with concentrations and as such aqueous solutions consist of dissolved solutes which can change in concentration unlike a solid group of atoms which cannot change in concentration
by Samuel_Vydro_1I
Mon Nov 14, 2016 2:42 pm
Forum: Ideal Gases
Topic: Chemical equilibrium
Replies: 4
Views: 659

Re: Chemical equilibrium

Yes, the aspect of equilibrium can be disturbed or altered momentarily as noted in Le Chatelier's Principle:chemical principle that states that if a system in equilibrium is disturbed by changes in determining factors, such as temperature, pressure, and concentration of components, the system will t...
by Samuel_Vydro_1I
Mon Nov 07, 2016 1:09 pm
Forum: Hybridization
Topic: Hybridization for the midterm
Replies: 2
Views: 352

Re: Hybridization for the midterm

Yes you need to know that hybridization only deals with regions of density as hybridized orbitals only encompass sigma bonds and lone pairs
by Samuel_Vydro_1I
Mon Nov 07, 2016 1:07 pm
Forum: Hybridization
Topic: Which Hybrid Orbital
Replies: 6
Views: 615

Re: Which Hybrid Orbital

Yes remember that the double and triple bonds include pi bonds which aren't shown in the hybridized orbitals which only illustrate sigma bonds and lone pairs
by Samuel_Vydro_1I
Sun Oct 23, 2016 3:17 pm
Forum: Resonance Structures
Topic: Resonance Structures-More Stable
Replies: 2
Views: 418

Re: Resonance Structures-More Stable

It's not the ability to draw the structures-- that's just a formality because we are operating in a 2-D sense. In reality the resonance means that each bond among the plausible options is the same length (as in the double bond is distributed throughout the options making the total molecule more stab...
by Samuel_Vydro_1I
Mon Oct 17, 2016 9:20 am
Forum: Ionic & Covalent Bonds
Topic: Ionic Chemical Equation
Replies: 2
Views: 268

Re: Ionic Chemical Equation

Therefore, the number in parentheses denotes what types of bonds the metals can make. For instance, Copper can be Cu(i) or Cu(ii). Cu(i) can give in one electron from a nonmetal as it is Cu1+ while Cu(ii) can give two electrons as it is Cu2+. Thus Cu(i) can form a bond like Cu2O while Cu(ii) can sim...
by Samuel_Vydro_1I
Fri Oct 07, 2016 1:03 am
Forum: Einstein Equation
Topic: Preparatory quiz [ENDORSED]
Replies: 3
Views: 514

Re: Preparatory quiz [ENDORSED]

Please explain how to do the question #10 on the first preparatory quiz. Alright so we are referring to "An excited hydrogen atom emits light with a frequency of 1.14x10^14 Hz to reach the energy level for which n = 4. In what principle quantum level did the electron begin?" If yes, then ...
by Samuel_Vydro_1I
Fri Sep 30, 2016 11:10 am
Forum: Properties of Light
Topic: Increasing Intensity in Photoelectric Effect [ENDORSED]
Replies: 9
Views: 989

Re: Increasing Intensity in Photoelectric Effect [ENDORSED]

I had the same question, but reading this post definitely helped! Also during that same lecture on 9/28, when going through the worked example in our Course Readers I was confused on where the values for "h" and "c" came from. We were trying to calculate energy and wavelength of...

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