CHEMISTRY COMMUNITY

Dominique Zuk 1G

In a few of the homework questions in Chapter 3 of the Organic Chemistry book we are asked to draw a "ring flip". Could someone please briefly explain what a ring flip is and how we can draw one on a structure?

Dominique Zuk 1G

From the chapter 1 homework question #12b, why is hte answer 3,4,4 trimethyl 2 pentene instead of 2,2,3trimethyl 2 pentene?

Dominique Zuk 1G

On page 93 of the course reader, why is it 4-ethyl,2,2-Dimethyl-hexane instead of 3-ethyl, 5,5-dimethyl-hexane? Wouldn't you give priority to the first alphabetized component with the smaller value? So why is it 4 instead of 3?

Dominique Zuk 1G

Can you include a catalyst in a rate law? I know you shouldn't include the intermediate in the rate law, so would you carry out the same process for the intermediate as you would the catalyst?

Dominique Zuk 1G

I know that a catalyst speeds up a reaction, but on the molecular level how does it do this ?

Dominique Zuk 1G

Could someone please explain how to write and analyze a cell diagram? I'm having trouble deciphering which aspect of the cell diagram represents the anode and cathode, and how do we know which direction the half equations go in?

Dominique Zuk 1G

For #3 on the practice quiz, why do we ignore the change in pressure? To solve it, we use the reversible equation for work which regards a change in Volume, but not a change in pressure.

Dominique Zuk 1G

For number 57 in the chapter 8 homework, how can one derive the equations that we need to use for Hess' Law? They aren't given in the problem, so could someone possibly explain the steps behind setting up the problem? Thank you!

Dominique Zuk 1G

In the work equation, w=-(summation of v1 to v2)(Pdv), what is the purpose and function of the summation part? Why is this incorporated into the equation when another equation is w=(p)(deltaV)?

Dominique Zuk 1G

In the book, an irreversible process is explained as an "expansion against an external pressure that differs by a finite amount". Could someone possibly explain this please? I don't really understand the definition.

Dominique Zuk 1G

He's implying that when you have an extremely large quantity of something, and if you take an almost negligible amount from it, you basically still have the same amount you started with. That's why for some of the acid/base problems you can assume that "X" is 0, because if it's such a smal...

Dominique Zuk 1G

When asked to give two different equations for Kp and Kc, how do they differ? Could someone please explain what needs to be included in each of these different equilibrium constants? Thanks!

Dominique Zuk 1G

Could someone please explain why Hypochlorous acid (ClOH) is more acidic than Hypoiodous acid (IOH) as shown in the course reader on page 154? I know it has to do with the electronegativity values, but could someone please elaborate on it further? Thanks!

Dominique Zuk 1G

When naming compounds, how do I distinguish between using the prefixes "trans" and "cis"? When are they required, and when are they not?

Dominique Zuk 1G

I know how to find the hybridization, however I am confused by the conceptual aspect behind it. Can someone please explain, for example, sp3 hybridization and how you can tell if an atom has sp3 hybridization besides just looking at the number of regions subtracted by one?

Dominique Zuk 1G

Could someone please explain why O3 is polar? I know the Lewis Structure for O3 is bent, but why?

Dominique Zuk 1G

On page 70 in the Course Reader, a diagram is presented that shows the ionic radii trends. As it states, the ionic radii trends increase down a group and decrease across a period. However, the diagram shows the radii initially decreasing, then enlarging and decreasing again (i notice the periodic ta...

Dominique Zuk 1G

On number 8 for Quiz Prep 2015 in the workbook, why do you use the speed of light equation, (c=(lambda)(v)), instead of using the debroglie equation to find the wavelength? In the debroglie equation, we could separate the "p" value to the mass of the electron and the "v" that was...

Dominique Zuk 1G

Though I've looked through the solutions manual for this problem (M.25 Fundamentals section), I still don't conceptually understand why the particular steps were taken to solve for the percent purity. We were given percentages of C (77.48%) and H (5.20%) that were present in the sample, and must cal...

Dominique Zuk 1G

Could someone possibly elaborate on the origin of spectral lines, and how they are formed/able to be seen? Also, the concepts of the Lyman and Balmer series confused me; any clarification on these topics would be much appreciated !

CHEMISTRY COMMUNITY

Search found 20 matches

Ring Flip

Homework question

Naming

catalyst

Catalyst

Cell Diagrams

Re: Quiz 1 Preparation Answers

Number 57 in Chapter 8 Homework

Work equation

Irreversible Process

Re: 5 Percent Rule

Kp and Kc

Oxoacids

Trans and Cis

Hybrid Orbitals

O3 Polarity

Ionic Radii Trends

Quiz Prep 2015 #8 [ENDORSED]

Fundamentals M.25 Help [ENDORSED]

Spectral Lines (experimental data and model)