CHEMISTRY COMMUNITY

haleh matinrad 1C

Hi everyone! Can anyone explain why the methyls of the cyclohexane in Question 6A of the 2013 Final are numbered 1,5,5,6 and not 1,2,3,3? It's because you have a double bond. When you have a double or a triple bond, you must count going across across the bond. You started at the double bond, but th...

haleh matinrad 1C

Will we have to know about saturated, unsaturated, polyunsaturated fats, etc. for the final since it is in the section to read in the syllabus however we never went over it in class

haleh matinrad 1C

When there is a double or triple bond as well as a halogen, does the double/triple bond take priority when naming because the halogen is treated like a substituent? Is the double/triple bond actually prioritized or am I mistaken? I know a functional group takes priority over double/triple bonds howe...

haleh matinrad 1C

Are there anymore low energy conformations for molecules other than the gauche and anti states?

haleh matinrad 1C

Could someone explain number 5? It is an electrophilic addition reaction because you are adding the HBr to the cholesterol. HBr when broken up has H+ as an electrophile and Br- as a nucleophile. There are two steps because first you add the H+ to the cholesterol then in the second step you add the ...

haleh matinrad 1C

What is the difference between a reaction being exergonic and a reaction being exothermic? Does a reaction being exothermic mean that it is exergonic and vice versa?

haleh matinrad 1C

What was the class average for quiz 2?

haleh matinrad 1C

To my understanding there is no direct general trend for them. Its just the fact that negatively charged species tend to be basic. It's important to remember that the strength of a nucleophile is relative to the reaction it is taking place in.

haleh matinrad 1C

Will there ever be a situation where one molecule or atom that was an electrophile could act as a nucleophile or vice versa?

haleh matinrad 1C

Yes Enot should be positive in order for it to be a spontaneous reaction.

haleh matinrad 1C

A higher voltage means it is more likely to be reduced which means that yes, it is a better oxidizing agent.

haleh matinrad 1C

Is there a quicker way of determining n (the number of electrons) than writing out and balancing the half reactions?

haleh matinrad 1C

How do you write the half reactions and devise a galvanic cell for a reversible reaction? For example when given: AgBr(s) double arrows Ag(+)(aq) + Br(-)(aq) Is it the same as usual?

haleh matinrad 1C

It's because the heat being added is used to to break bonds and other things like that so the temperature isn't going up until all bonds are broken.

haleh matinrad 1C

When using bond enthalpies to calculate the standard enthalpy of reaction, can you calculate breaking and forming all bonds in the equation? I know this would take an excessively long time but would you get the same result doing this as you would breaking and forming the minimum number of bonds requ...

haleh matinrad 1C

Since the course reader says that most reactions are given in their standard state, are there specific reactions that are not given in their standard state? Or is it rare enough that it is not an issue?

haleh matinrad 1C

I've also heard it's supplemental but that we won't be using it until the last portion of the quarter since 14C is organic chemistry

CHEMISTRY COMMUNITY

Search found 17 matches

Re: Final 2013 Q6 - Numbering

saturated, unsaturated fats, etc.

priority of double/triple with a halogenated compound

gauche and anti

Re: Quiz 3 Winter 2017

exergonic vs exothermic

quiz 2

Re: strength of nucleophiles vs basicity

electrophiles turns into nucleophile [ENDORSED]

Re: 14.31 [ENDORSED]

Re: highest possible charge [ENDORSED]

calculating n [ENDORSED]

reversible reaction [ENDORSED]

Re: Phase Changes

which bonds to break/form [ENDORSED]

standard reaction enthalpy

Re: Intro to Organic Chemistry