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yeah!And now can please tell me that what were the two pair isomers ? I had a cis-trans pair and an optical isomers pair am i right?
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yeah!And now can please tell me that what were the two pair isomers ? I had a cis-trans pair and an optical isomers pair am i right?
Yep right. They are the only stereioisomers we cud getAnd now can please tell me that what were the two pair isomers ? I had a cis-trans pair and an optical isomers pair am i right?
Look, I got your point. But what puzzled me was that it was written HO, as u still remember. If it was alcohol, they could've simply written OH.
Were they seven or 6? And please, CIE examiners that not that lenient that they'll give u straight marks for just writing a letter and a color change.
Nopeyou guys didnt take chemistry P42?
hope you catch the marks lost in P1Every mark matters. But I guess I lost my senses somewhere. Anyways, sorry people. Hope we all get As InshaAllah. Peace.
hey nishi i have taken p4 and the organic ques was disastrousyou guys didnt take chemistry P42?
for me too! horrible! Worst, the two questions make up 28 marks! otherwise the level was kinda low..gt will be high for sure!hey nishi i have taken p4 and the organic ques was disastrous
0.5g of RAW medicine!0.5 or 0.05?g :O
haha thanx...Haha yes hoga
Howcome they never mentioned in our course bookSource : http://www.chemguide.co.uk/organicprops/carbonyls/oxidation.html
4th paragraph from top:
Because ketones don't have that particular hydrogen atom, they are resistant to oxidation. Only very strong oxidising agents like potassium manganate(VII) solution (potassium permanganate solution) oxidise ketones - and they do it in a destructive way, breaking carbon-carbon bonds.
I guess if chemguide says so, it must be reliable.
So the answer to the last part of the table is that it oxidizes the ketone, and the colour change is from purple to colourless
I don't think we'll lose marks. All we're supposed to know is that ketones are not oxidised. I doubt we'll be penalised, unless Cambridge plays the devilHowcome they never mentioned in our course book
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