Swarley's Chem Questions :)

[Greatness]

How well do you think we should know the Spectroscopy/Chromatography like equipment wise, how they work and the steps in using them? And knowing how to interpret the results is the more critical thing yeah?

[pi]

I haven't done much spectroscopy yet, but in chromatography, knowing the specific methods is not necessary (just a general knowledge should suffice). You should know (for chromatography) which type of substance works best with each type of chromatography and what the advantages/disadvantages are of each.

[Greatness]

Alright yeah its just that we're going through this stuff so fast in class... We've covered all of chromatography and most spectroscopy techniques in like a 2 weeks (10 lessons).. we're going to finish start/finsh NMR tomorrow. And i dont think that we were goin into enough detail.

[pi]

Its pretty hectic, we only spent 1.5 periods on chromatography

[david10d]

Wow you guys are destroying it.

Our class has a SAC in 10 days on chromatography and we've spent one double writing 3 dot points.

[scocliffe09]

Just want to remind you guys that all the spectroscopy, chromatography in particular, will make a lot more sense and have a far greater application once you've done all the organic chem that's in Unit 3. That's why I'm moving on to organic with my students next week.

[huaxiadragon]

Yeah I agree, Chromatography and Spectroscopy only makes sense combines with organic Chemistry. However, you do need to know about what each part of the equipment are used for. e.g, what is the injection port?

Here's the key knowledge required as copied from the study design

• principles and applications of chromatographic techniques and interpretation of qualitative and
quantitative data from thin layer chromatography (TLC), high performance liquid chromatography
(HPLC) and gas chromatography (GC);
• principles and applications of spectroscopic techniques and interpretation of qualitative and
quantitative data from atomic absorption spectroscopy (AAS), infrared spectroscopy (IR), mass
spectroscopy, nuclear magnetic resonance spectroscopy (NMR), and visible and ultraviolet
spectroscopy (visible-UV);
• matching analytical technique/s to a particular task.

[pi]

Yeah I agree, Chromatography and Spectroscopy only makes sense combines with organic Chemistry. However, you do need to know about what each part of the equipment are used for.

+1 Thats why we are doing AOS2 now (right after chromatography) instead of jumping to spectroscopy

[Mao]

Just want to remind you guys that all the spectroscopy, chromatography in particular, will make a lot more sense and have a far greater application once you've done all the organic chem that's in Unit 3. That's why I'm moving on to organic with my students next week.

I disagree. Most of spectroscopy and chromatography can be understood with unit 1 contents. In fact, most absorption spectroscopy and chromatography have no connection to organic chemistry. Application of absorption spectroscopy and chromatography is simply using a calibration curve. Understanding the principles almost always boil down to the structure of an atom (unit 1), trends in periodic table (unit 1) and intermolecular interaction (unit 1).

Knowledge of organic chemistry is only required for tackling IR, NMR and MS.

[Greatness]

Would methylbutane be the same as pentane?

[nacho]

Would methylbutane be the same as pentane?

Same molecular formula,
it is a structural isomer?

[Greatness]

hmm yeah a question asked to draw methylbutane, but the answer actually has 2 methyl butane....

[Zien]

You mean 2-methylbutane right? If so, then that's the systematic name for it.

[luken93]

Yeah, it'd need to be 2-Methyl Butane. If it were Methyl Butane, then it implies that it is 1-Methyl Butane, in which case it'd have a 5 Carbon chain, and would be called Pentane...

[Greatness]

Yeah. Sorry for tthe confusion. The question wants you to draw the structural formula for methylbutane. But the answer has the structural formula for 2-methylbutane.
So what im asking is methlybutane and 2-methylbutane are different things?