CHEMISTRY COMMUNITY

Mannat Sukhija 1E

Only if there is multiple double bonds.

Mannat Sukhija 1E

The classification of an alcohol is based on the classification of the carbon it is covalently bonded to. For example, the carbon you outlined in purple is a tertiary carbon because it forms 3 carbon-carbon bonds. Thus the alcohol group it is bonded to is a tertiary alcohol. An alcohol group can onl...

Mannat Sukhija 1E

I believe you want to aim for the first number to be as small as possible opposed to a smaller sum of substituent numbers.

Mannat Sukhija 1E

Also once the double bond is broken, a single bond remains and a single bond must always be a sigma bond.

Mannat Sukhija 1E

The two after the first (CH3) indicates that two methyl groups are attached to the first carbon in the chain.

Mannat Sukhija 1E

From the practice quiz, it seems that it will only cover organic chemistry, but I am not 100% sure.

Mannat Sukhija 1E

All of our reading and problem material from now on will be in the Organic Chemistry Textbook, rather than the Chemical Principles textbook.

Mannat Sukhija 1E

Does anyone know on the dates of the first and last lecture that will be covered on Quiz 2?

Mannat Sukhija 1E

In the reaction

Cl2(g)--->HClO(aq)+Cl-(aq)

why does CL2(g) serve as both the oxidation and reducing agent since it is being reduced?

Thank you in advance!

Mannat Sukhija 1E

I just wanted to make sure we would be given quantities like the heat of fusion or sublimation of a substance if needed on a problem. For example, if we needed to calculate the energy needed to melt a certain quantity of ice, would we be given the energy needed to melt one gram or mole of H20.

Mannat Sukhija 1E

From what I understand, Dr. Lavelle does the derivations in class so we can have a better understanding of where the equations we use come from. But if you would still like to study the derivations there is a set of link on the Chemistry 14B wesbite about common derivatives in chemistry, and it is v...

Mannat Sukhija 1E

To answer the second part of the question on how you know which bonds to break and form, when using bold enthalpies you can take the opposite of the enthalpy of formation of all of the reactants and add this to the enthalpy of formation of the products. This is because breaking bonds in the reactant...

Mannat Sukhija 1E

I believe it is a supplemental material, like the course reader is now, for when we start learning Organic Chemistry later in the quarter.

Mannat Sukhija 1E

No, the coordination number comes from molecules inside the coordination compound. So the Cl on the outside of the brackets would not be counted.

Mannat Sukhija 1E

I think it is until page 136 in the course reader, can anyone confirm?

Mannat Sukhija 1E

Yes, an expanded octet just means that an atom can have more than 8 valence electrons, it does not limit the number of electrons, for example: PCl6 would be allowed with a phosphorous atom with an expanded octet to fit 12 electrons.

Mannat Sukhija 1E

What would be the hybridization for an atom with an expanded octet, for example the hybridization of P in PCl5? Would it be sp4? Or is that not permitted.

Mannat Sukhija 1E

When given the choice between drawing a Lewis structure that has the overall smallest formal charge or one that has a smaller charge for the central atom, which one is deemed more correct?

Mannat Sukhija 1E

Will we have to address the polarity of a molecule on questions? For example by noting them as cis- or trans- depending on whether the charges cancel?

Mannat Sukhija 1E

I think Dr. Lavelle mentioned that we would not have to draw any VSEPR shapes and rather the Lewis Structure would be sufficient.

Mannat Sukhija 1E

In the example Lavelle did in class with the resonance structure of NO3, why would the partial double bond have a length of 1.5 bonds and not 1.33 since there are 3 N-O bonds that the extra bond length must be divided between?

Mannat Sukhija 1E

For determining light emitted based on the wavelength, should we know just the range of wavelengths for visible light (400-700 nm), or also each specific colors range or the ranges of UV light etc.

Mannat Sukhija 1E

So I've been wondering, what's so important about sigfigs? why does it matter how many numbers we leave after the decimal place? Significant figures are important in the answer to a chemistry problem so that our answer is as precise as it can be from the information given to us. If we do not round ...

CHEMISTRY COMMUNITY

Search found 23 matches

Re: Cis/ Trans

Re: What type of alcohol?

Re: Numbering

Re: Question Regarding Alkenes

Re: Name the compound

Re: Quiz number 3

Re: Intro to OChem Textbook?

Re: Quiz 2 Winter 2017

Textbook Question 14.3 D

Given quantities

Re: Derivations

Re: which bonds to break/form [ENDORSED]

Re: Intro to Organic Chemistry

Re: Coordination numbers [ENDORSED]

Re: Quiz 3

Re: Expanded Valence Shell Electrons

Hybridization for expanded octets

Determining Lewis structures

Re: Polar/nonpolar molecules

Re: Lewis Structures on the Midterm

NO3 Partial Double Bond [ENDORSED]

Atomic Spectra Requirements [ENDORSED]

Re: All students read this sig fig post [ENDORSED]