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O Level Chemistry & IP Chemistry Notes by 10 Year Series Author – Chemistry Specialist

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O Levels Chemistry Questions – Organic Chemistry (Carboxylic Acids & Alcohols)

Check this question out on Carboxylic Acids & Alcohols.

Leave your suggested answers in the “Comments Section” below this blogpost.

Question:

alcohols-and-acids-post-1.jpg

(Click Image above to have better view)

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Comments

  1. Ume Amara says

    January 14, 2016 at 3:53 pm

    As 88 mass number is of butanoic acid and after it reaction with ethanol,an ester with 6-carbon is formed.
    So answer must be B.

  2. Ume Amara says

    January 14, 2016 at 3:50 pm

    B is the answer

  3. ANN says

    December 5, 2012 at 10:27 pm

    HI its answer is D according to given formula

  4. Just Showin' off says

    March 31, 2012 at 7:59 pm

    I think that the answer is “D”.
    because the general formula indicates that the answer is some sort of carbonyl compound and the fact that it reacts with an alcohol to form a “fruity-smelling liquid” ascertains that the compound is a carboxylic acid
    Since only options “A” and “D” are carboxylic acids and only D has the correct Relative Molecular Mass of 88.
    Therefore the correct answer is “D”.
    In addition to that the ester formed from the reaction between “D” and ethanol would be option “B”.
    Ethyl Butanoate I think is the name of the ester formed.

    ;D

  5. wayne says

    February 28, 2012 at 8:19 am

    no Its A, since consist of eth,oH Bond and ester-

  6. sean says

    July 9, 2008 at 1:18 am

    Excellent Answers by all!!!

    Keep up the good work!

    Cheers
    Sean
    Founder & Master Trainer
    SimpleChemConcepts.com

  7. undergradwannabe says

    July 4, 2008 at 4:23 pm

    Hi, my ans is D because it is CnH2n+1COOH is e gen formula for carboxylic acid. Also, The total Mr of the compound is 88. After reacting with ethanol, C2H5OH, the product would be the ester in option B in the ans. QED 🙂

  8. Jen says

    July 3, 2008 at 9:46 pm

    Hi.

    I would go for D.

    A and D seems to be the answer as they both have th alcohol structure.

    However, A do not have the molecular mass of 88. Instead, A has a molecular mass of 60. Hence, it is wrong.

  9. Joscelin says

    July 3, 2008 at 9:41 pm

    My ans is D.
    The structural formulae adds up to a Mr of 88.
    And it only shows COOH func group, not an ester which is B&C

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