O Level Chemistry Question – Organic Chemistry (Alcohol)
17 Jul
Posted by: sean in: Chemistry Notes & Tips
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Let’s get back to try out more questions on Organic Chemistry.
For GCE ‘O’ Level Examination itself, Organic Chemistry constitute a high weightage of the overall marks. For the last 7 years, Organic Chemistry make up about 25 marks and more for Paper 1 and 2 combined. This is alot of marks for a Topic itself and you should be well versed in it. To me, Organic Chemistry will give us the Base to achieve our A1s and A2s.
Question:
(Click image to have a better view)PS: Leave your suggested answers below at the “Comments” section.
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5 Responses
Jen
09|Jul|2008 1I would go for answer A
not too sure for this one.
Reply
Gary
10|Jul|2008 2Nope.Option A is definitely wrong because for ethanol to be an acid,it must be oxidised via a oxidising agent(KMnO4 or K2Cr2O7) or by atmospheric oxygen.In this case it’s oxidised by atmospheric oxygen.
Products of oxidation of alcohol will be the carboxyllic acid and water.So my answer will be B.
Reply
sean
16|Jul|2008 3Hey Jennifer.
Answer should be B for this one.
Alcohol are oxidized to Carboxylic Acid by oxygen gas (present in air), and in the process
water is also produced.
This is one of the Chemical Properties of Alcohol.
Sean
Reply
sean
16|Jul|2008 4Well Done Gary.
Answer is indeed B. This is indeed testing you on the oxidation properties of
Alcohol.
Sean
Reply
NAVEED KHAN
18|Nov|2009 5I think the answer is b b/c beer is actualy ethanol and when it reacts with
atmospheric Oxygen it forms acetic acid and water. plz if i m rite inform me
i m waiting 4 uir result
Reply
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