questions on organic chemistry
TRANSCRIPT
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8/12/2019 Questions on Organic Chemistry
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Core 1
(a)
www.Xtrem
ePapers.c
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8/12/2019 Questions on Organic Chemistry
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Extension 1
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8/12/2019 Questions on Organic Chemistry
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Extension 1
Fig. 1
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8/12/2019 Questions on Organic Chemistry
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Extension 2
Fig. 2
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8/12/2019 Questions on Organic Chemistry
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Extension 3
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8/12/2019 Questions on Organic Chemistry
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Extension 4
[3]
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8/12/2019 Questions on Organic Chemistry
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Extension 4
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8/12/2019 Questions on Organic Chemistry
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Extension 5
(a)
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8/12/2019 Questions on Organic Chemistry
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Extension 5
(b)
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8/12/2019 Questions on Organic Chemistry
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Organic Chemistry 2 page 1
Core 1
(i) 100
(ii) addition or polymerisation
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8/12/2019 Questions on Organic Chemistry
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Organic Chemistry 2 page 2
Extension 1
a burning forms carbon dioxidephotosynthesis uses up the gas or plant (growth) uses up gasthe two balance or are in equilibrium
b(i) bromine(water)brown / orange / yellowturns to colourless
or
potassium manganatepurple / pinkturns to colourless or green for alkaline reagent
(ii) hydrolyse or saponification or heat (for correct reagent)sodium hydroxide or alkali
(iii) hydrogen
c any two of thesehydrogen has lowest Mrlowest densityhighest molecular speedslightest molecules
it is lightest gas
d(i) good conductor ductile or malleable
(i) one ofinsulator or poor conductor
one ofeasily shaped or flexible or not biodegradable or unreactive or durable
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8/12/2019 Questions on Organic Chemistry
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Organic Chemistry 2 page 3
Extension 2
a(i) ester or polyester
(ii) fats or vegetable oils or lipids
b -NHCO(CH2)4CONH(CH2)6NHCO-
or -NHCO--CONH--NHCO-
or -NHCO--NHCO--NHCO-
c(i) carbon, hydrogen and oxygen
(ii) --------
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8/12/2019 Questions on Organic Chemistry
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Organic Chemistry 2 page 4
Extension 3
(i) addition or addition polymerisation
(ii) correct repeat unit showing branched CH3
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8/12/2019 Questions on Organic Chemistry
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Organic Chemistry 2 page 5
Extension 4
a(i) correct formula of an isomer
CH3.CH2.CHBr.CH3
or CH3.CH(CH3).CH2Bror (CH3)3CBr
(ii) any correct formula for a dibromomethane
(iii) butene
bromine
b correct formula CH3Cl showing 8e around C and Cl and 2e around hydrogen
c(i) butanol or butan-1-ol
(iii) correct reagent and resultsilver nitrate cream or off-white precipitatelead nitrate yellow precipitatechlorine goes brown / orange / yellowmanganate (VII) purple to colourless / green / browndichromate (VI) orange to green
(iv) halide was iodidecolour due to iodine
d(i) iodobromochloro
(ii) any two ofslower ratesmaller concentrationfewer particlesfrequency of collision
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8/12/2019 Questions on Organic Chemistry
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Organic Chemistry 2 page 6
Extension 5
a(i) acidhydrolysis
(ii) any three of theseyeast or enzymes such as zymasefermentationaqueous solutionword equationsymbol equation
b propanoic acidCH3CH2COOH