CHEMISTRY COMMUNITY

Tasnim Sazzad 4B

Is there supposed to be a charge on amines? Because wouldn't a tertiary amine have one more bond the the first three types?

Tasnim Sazzad 4B

Which way do we draw the chair conformation facing that makes it the most stable? Or does the orientation not matter, as well as which corner we start numbering from?

Tasnim Sazzad 4B

Would the name be;1-(1-methylpropyl)cyclobutane or 1-methylpropylcyclobutane?

Basically, is it implied that the substituent would be on the first carbon?

Tasnim Sazzad 4B

Can someone explain the difference between sec-propyl and iso-propyl, and also when to use which name?

Tasnim Sazzad 4B

When trying to number, if counting from both sides gives the same number, which side do you pick?

Tasnim Sazzad 4B

Why must an aldehyde be at the end of a carbon chain?

Tasnim Sazzad 4B

Why can't a ketone be at the end of a carbon chain?

Tasnim Sazzad 4B

For 1 substituent on a ring, why is it not ethyl-methyl but methyl-ethyl for isopropyl-cyclopentane?

Tasnim Sazzad 4B

Why is the ring always the parent hydrocarbon?

Tasnim Sazzad 4B

Still slightly confused on how to classify something as classify something as a closed or isolated system when given an example.

(I know closed is allowing transfer of energy but not matter while an isolated system allows neither)

Tasnim Sazzad 4B

Does the shorthand notation of glavanic/voltaic cells have a rule about the order of which anode/cathode? (like between phase changes, not between anodes and cathodes in itself)

Tasnim Sazzad 4B

What do you do with the sick chemist?

If you can't Helium, and if you can't Curium, then you might as well Barium!

Tasnim Sazzad 4B

Are all isolated systems, adiabatic (only adiabatic boundary sectors)? Because I thought that there's such thing as an adiabatic isolated system but adiabatic can have energy transferred as work?

Tasnim Sazzad 4B

Why does specific heat capacity use kJ and molar heat capacity use J? I know you can easy get kJ/J by multiplying/dividing by 1000 so it's almost interchangeable but one is obviously preferred over the other in terms of units.

Tasnim Sazzad 4B

When using a strong acid, I know an arrow to the right can be used to show 100% dissociation (like HCL) but is this only the case for strong acids?

Would we be incorrect for using an equilibrium sign instead?

Tasnim Sazzad 4B

What's the correlation between proton transfer and H+ ions?

Tasnim Sazzad 4B

When do you use hydrate instead of aqua?

Is it just for ions?

Tasnim Sazzad 4B

For #34.c in the homework problems; the formula for tetraamminediaquacobalt(lll)bromide is [Co(NH3)4(H20)2]Br3.

Why is it "Br3"?

Also, if we were to write OH2 instead of H20, would we be marked down? I've seen it written both ways.

Tasnim Sazzad 4B

Do we include aqueous solutions when calculating the value of K_eq for chemical reactions?

Tasnim Sazzad 4B

For the quiz, how strict is the notation to describe resonance, and just to clarify, how exactly do you describe a resonance structure?

Tasnim Sazzad 4B

I know how to get the molecular shape of a compound with one central atom, but how do we do that if there are two central atoms. Like in the course reader (87), cis-dichloroethene, I understand that it is polar because the dipoles do not cancel, but given that, how do I determine the shape?

Tasnim Sazzad 4B

When observing covalent bonds, do the electrons orbit around both the nuclei or do they stop in-between?

Tasnim Sazzad 4B

Is the solution of the wave function just the amount of energy?

Tasnim Sazzad 4B

How do you find the momentum of a photon since a photon is said to be "massless?"

CHEMISTRY COMMUNITY

Search found 24 matches

Charges on Amines

Chair Comformation Orientation

specificity

Sec-Propyl vs Iso-propyl

Same numbering

aldehyde must end

Can't end

1 substituent

parent chain

Closed and Isolated?

Shorthand Notation

Re: Chemistry Jokes

Isolated adiabatic systems

Units

Equilibrium sign or not [ENDORSED]

Correlation

Hydrate

Naming confusion on homework problem

Aqueous Solutions in Equilibrium Constant Calculations

Resonance Notation

Molecular Shape with Two Central Atoms

Covalent Bond Electrons

Wave Function Solution

Momentum of a Photon