On any of the unit 3 chem past papers, were there any questions or parts related to theory? If there were can someone please post the topics? I was doing the jan 2011 paper and there was a question on kinetics collision theory.
I thought this ppr only tested practical knowledge...
On any of the unit 3 chem past papers, were there any questions or parts related to theory? If there were can someone please post the topics? I was doing the jan 2011 paper and there was a question on kinetics collision theory.
I thought this ppr only tested practical knowledge...
Yea, I'm hoping that the paper has a lot of calculations and a titration question. Hopefully, nothing from IR spectra
IR spectra is easy. A range of peaks like for alcohol and aldehydes will be given. The question might be show that the compound is an alcohol. So in the graph search for the peaks and cross check with the range given for alcohol. Other follow up questions are on organic
IR spectra is easy. A range of peaks like for alcohol and aldehydes will be given. The question might be show that the compound is an alcohol. So in the graph search for the peaks and cross check with the range given for alcohol. Other follow up questions are on organic
Check google. On Wikipedia, in the article abt separating funnel, there was a diagram of oil on top of water. Googled for the respective densities and saw that oil was more dense and made my conclusion
Check google. On Wikipedia, in the article abt separating funnel, there was a diagram of oil on top of water. Googled for the respective densities and saw that oil was more dense and made my conclusion
IR spectra is easy. A range of peaks like for alcohol and aldehydes will be given. The question might be show that the compound is an alcohol. So in the graph search for the peaks and cross check with the range given for alcohol. Other follow up questions are on organic
-Test for ions -Organic (Halogenoalkane reaction) -Energetics -Maybe kinetics and ir spectra (they only asked them once) -Something new like mass spectral analysis?
-Test for ions -Organic (Halogenoalkane reaction) -Energetics -Maybe kinetics and ir spectra (they only asked them once) -Something new like mass spectral analysis?
OIL is less dense than water so it floats. HENCE the less dense substance is on top. and the more dense is below. in simple words the lighter substance is on the top as the heavier substance sinks.
OIL is less dense than water so it floats. HENCE the less dense substance is on top. and the more dense is below. in simple words the lighter substance is on the top as the heavier substance sinks.
I forgot oil was less dense than water
But check Jan 2010 paper. In the separating funnel question, the more dense liquid is at the top. How is that?
I hope kinetics is in this paper, a lot of calculations, and drawing a distillation or reflux apparatus, and graph plotting. Nothing on IR Mass spectra please!
I hope kinetics is in this paper, a lot of calculations, and drawing a distillation or reflux apparatus, and graph plotting. Nothing on IR Mass spectra please!
We are on the same boat
One doubt:-
In the separating funnel, the more dense liquid is at the top. Why is that? What is the reasoning behind it?
But check Jan 2010 paper. In the separating funnel question, the more dense liquid is at the top. How is that?
Is it something to do with the funnel?
i guess its because it says its" the aqueous layer" so maybe the alcohol was dissolved in the water- hence making the whole solution of the bottom layer denser
BY THE WAY I CHECKED GOOGLE OIL IS NOTTT MORE DENSE THAN WATER