CHEMISTRY COMMUNITY

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Are we going to required to know phenol groups? I know they're important in organic chemistry but we never went over them in lecture.

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In quiz 3, they gave us several molecules (e.g. CH3+, OH-, CH3,Cl, CO2) and asked us to categorize them either as an electrophile or nucleophile. Other than the overall charge of the molecule, is there another way to tell whether a molecule is more electrophillic/nucleophillic?

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The question gives that A + B + C --> X and the rate law would be R=k[A]^2[B][C] and it asks you to find the rate constant k for the reaction given that the excess reactants concentration of A and B is [A]_o_ [B]_o_ How do you solve for k with this given. I had to leave this one blank on the quiz be...

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IN the midterm, question 8, the test asks what would the effect on the potential of the cell if the size of the silver electrode were doubled?

I understand that nothing would happen, but why would there be no effect on E?

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In a sports relay race, a chemical kinetics specialist runs slowly, and his group loses the race.

When the chemical kinetics specialist is asked why he ran slowly, his reply was “I always wanted to be the significant rate determining step”.

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In the problem, O2 and H+ are on the anode but they are being combined to form water, why is this? Typically the two molecules would exchange electrons on separate sides of the chemical reaction.

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When solving the question, you should use $\Delta G^{r} = \Delta G^{\circ} + RTlnQ$

If $\Delta G^{\circ}$ represents the Gibbs Free Energy at STP, why does the solutions manual solve for $\Delta G^{\circ}$ at 1200K rather than 298K?

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What's the difference between bond enthalpies and enthalpies of formation and can you use either to solve $\Delta G = \Delta H -T\Delta S$

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When doing the homework problems for chapter 8 (I believe the question in the book is either 35 or 37) it asks for the Enthalpy of Vaporization. What is the formula for this. Also I noticed when doing the bomb calorimeter problems, the solutions manual uses the formula q = C sp *delta*T... why is th...

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Why would coffee in a thermos be considered an isolated system? In my everyday experience with thermoses, the coffee would cool if put in the fridge, and thus have a change in energy.

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IMG_0276.mp4 [ 359.55 MiB | Viewed 578 times ]

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Here is my video for Lewis Structures and VSEPR. Enjoy.

https://youtu.be/VVSX46ymEH8

CHEMISTRY COMMUNITY

Search found 12 matches

Phenol groups

General Question about Nucleophiles vs. Electrophiles

Question from Quiz 2

Midterm Question

Re: Chemistry Jokes

HW 14.11 Part D

HW 11.11

Bond Enthalpies

Enthalpy of Vaporization

Question 8.1

Re: Lewis Structures and VSEPR

Lewis Structures and VSEPR