Search found 23 matches

by Mannat Sukhija 1E
Sun Mar 19, 2017 11:28 am
Forum: *Alkenes
Topic: Cis/ Trans
Replies: 4
Views: 1185

Re: Cis/ Trans

Only if there is multiple double bonds.
by Mannat Sukhija 1E
Wed Mar 15, 2017 10:26 am
Forum: *Alcohols
Topic: What type of alcohol?
Replies: 1
Views: 490

Re: What type of alcohol?

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...
by Mannat Sukhija 1E
Wed Mar 08, 2017 6:51 pm
Forum: *Alkanes
Topic: Numbering
Replies: 6
Views: 497

Re: Numbering

I believe you want to aim for the first number to be as small as possible opposed to a smaller sum of substituent numbers.
by Mannat Sukhija 1E
Wed Mar 08, 2017 2:17 pm
Forum: *Electrophiles
Topic: Question Regarding Alkenes
Replies: 2
Views: 530

Re: Question Regarding Alkenes

Also once the double bond is broken, a single bond remains and a single bond must always be a sigma bond.
by Mannat Sukhija 1E
Tue Feb 28, 2017 12:22 pm
Forum: *Alkanes
Topic: Name the compound
Replies: 4
Views: 385

Re: Name the compound

The two after the first (CH3) indicates that two methyl groups are attached to the first carbon in the chain.
by Mannat Sukhija 1E
Mon Feb 27, 2017 8:34 pm
Forum: Administrative Questions and Class Announcements
Topic: Quiz number 3
Replies: 5
Views: 664

Re: Quiz number 3

From the practice quiz, it seems that it will only cover organic chemistry, but I am not 100% sure.
by Mannat Sukhija 1E
Mon Feb 27, 2017 8:33 pm
Forum: Administrative Questions and Class Announcements
Topic: Intro to OChem Textbook?
Replies: 2
Views: 254

Re: Intro to OChem Textbook?

All of our reading and problem material from now on will be in the Organic Chemistry Textbook, rather than the Chemical Principles textbook.
by Mannat Sukhija 1E
Sun Feb 19, 2017 5:51 pm
Forum: Administrative Questions and Class Announcements
Topic: Quiz 2 Winter 2017
Replies: 160
Views: 15296

Re: Quiz 2 Winter 2017

Does anyone know on the dates of the first and last lecture that will be covered on Quiz 2?
by Mannat Sukhija 1E
Thu Feb 09, 2017 2:56 pm
Forum: Balancing Redox Reactions
Topic: Textbook Question 14.3 D
Replies: 1
Views: 196

Textbook Question 14.3 D

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!
by Mannat Sukhija 1E
Tue Jan 31, 2017 4:43 pm
Forum: Phase Changes & Related Calculations
Topic: Given quantities
Replies: 2
Views: 329

Given quantities

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.
by Mannat Sukhija 1E
Thu Jan 26, 2017 1:41 pm
Forum: Phase Changes & Related Calculations
Topic: Derivations
Replies: 21
Views: 2129

Re: Derivations

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...
by Mannat Sukhija 1E
Sat Jan 21, 2017 1:48 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: which bonds to break/form [ENDORSED]
Replies: 2
Views: 301

Re: which bonds to break/form [ENDORSED]

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...
by Mannat Sukhija 1E
Thu Jan 12, 2017 1:36 pm
Forum: General Science Questions
Topic: Intro to Organic Chemistry
Replies: 9
Views: 1069

Re: Intro to Organic Chemistry

I believe it is a supplemental material, like the course reader is now, for when we start learning Organic Chemistry later in the quarter.
by Mannat Sukhija 1E
Tue Nov 15, 2016 12:30 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Coordination numbers [ENDORSED]
Replies: 1
Views: 252

Re: Coordination numbers [ENDORSED]

No, the coordination number comes from molecules inside the coordination compound. So the Cl on the outside of the brackets would not be counted.
by Mannat Sukhija 1E
Mon Nov 14, 2016 7:30 am
Forum: Student Social/Study Group
Topic: Quiz 3
Replies: 2
Views: 615

Re: Quiz 3

I think it is until page 136 in the course reader, can anyone confirm?
by Mannat Sukhija 1E
Sun Nov 06, 2016 11:37 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Expanded Valence Shell Electrons
Replies: 2
Views: 353

Re: Expanded Valence Shell Electrons

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.
by Mannat Sukhija 1E
Fri Nov 04, 2016 3:01 pm
Forum: Hybridization
Topic: Hybridization for expanded octets
Replies: 3
Views: 742

Hybridization for expanded octets

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.
by Mannat Sukhija 1E
Tue Nov 01, 2016 7:30 am
Forum: Lewis Structures
Topic: Determining Lewis structures
Replies: 4
Views: 518

Determining Lewis structures

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?
by Mannat Sukhija 1E
Tue Nov 01, 2016 7:27 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Polar/nonpolar molecules
Replies: 3
Views: 383

Re: Polar/nonpolar molecules

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?
by Mannat Sukhija 1E
Tue Nov 01, 2016 7:24 am
Forum: Administrative Questions and Class Announcements
Topic: Lewis Structures on the Midterm
Replies: 2
Views: 396

Re: Lewis Structures on the Midterm

I think Dr. Lavelle mentioned that we would not have to draw any VSEPR shapes and rather the Lewis Structure would be sufficient.
by Mannat Sukhija 1E
Mon Oct 17, 2016 9:30 am
Forum: Resonance Structures
Topic: NO3 Partial Double Bond [ENDORSED]
Replies: 2
Views: 298

NO3 Partial Double Bond [ENDORSED]

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?
by Mannat Sukhija 1E
Wed Oct 05, 2016 9:42 am
Forum: Properties of Electrons
Topic: Atomic Spectra Requirements [ENDORSED]
Replies: 3
Views: 401

Atomic Spectra Requirements [ENDORSED]

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.
by Mannat Sukhija 1E
Wed Sep 28, 2016 4:32 pm
Forum: Significant Figures
Topic: All students read this sig fig post [ENDORSED]
Replies: 115
Views: 10259

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

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 ...

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