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(a) Homologous series : alcohol
General formula : CnH2n+1OH
(a) Functional group : Hydroxyl group
(b) Fermentation
(c) Alcohols as fuels
(d) (i) Ethanoic acid
(ii) Reaction : oxidisation
Observation : purple colour of potassium manganate (VII) is decolourised

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1a,alcohol,CnH2n+1OH
A,Hydroxyl groul
B,Fermentation
c,fuel
iekzencheng

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（a）C2H2n+OH
(a) hydroxyl group
(b) fermentation
(c) as fuels gas
(d) (Ⅰ)ethanoic acid
(Ⅱ) oxidation. purple colour turn into colourless

chiew eng kit

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Chemistry ⚗ homework - Kittikkun Khunpithak 21/3/2019

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Chemistry ⚗ homework - Kittikkun Khunpithak 21/3/2019

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1(a) Alcohol. CnH2n+1OH.

(a) Hydroxyl group
(b) Fermentation
(c) Use to clean marker stains
(d) (i) C₄H₉OH + 2[O] --->  C ₃ H ₇ COOH + H ₂ O           The product formed is butanoic acid and water.
(ii) Oxidation reaction.The purple colour of acidified potassium manganate(VII) solution turns colourless.

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Daniel
1a)alcohol,CnH2n +OH
a) hydroxyl,OH
b) fermentation
C) as fuel
D) 1)ethanoic acid
2)the purple colour solution turn to colourless

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1. a) Alcohol-CnH2n+OH.

a)Hydroxyl group,-OH.
b)Fermentation.
c)In cosmetic manufacture.
d)i-Water.
ii-Oxidation,the purple colour of the solution                     turns to colourless.

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(a) alcohol，CnH2n+nOH
(a) Hydroxyl,-OH
(b) dehydration
(c) to preserve fruits
(d) （i）water，H2O
(ii) oxidation,the purple colour solution will turn to colourless

CHAN JIA LE

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1(a)Alcohol,CnH2n+1OH (2 & 1 IS SMALL)
1(a)Hydroxyl,-OH
(b)Fermentation
(c)As fuels
(d)(i) ethanoic acid
(ii)oxidation.The purple colour solution turns to colourless

WOON YEE YING      18/3/2019

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1(a).Ethanol and butanol,general formula of alcohol is  CnH ₂ n+OH
1(a).Hydroxyl group
1(b).Fermentation process
1(c).main ingredients in cosmetics and beauty products
1(d).(i)Oxidation
1(d).(ii)The colour of acidified potassium manganate (vii) solution changes from purple to colourless

Nur harisya

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Compound X : C₂H₅OH        Compound Y : C₄H₉OH
1. By using the molecular formula given, answer the following questions.
(a)      Name the homologous series and its general formula for this compound.
(a)      Name the functional group for this compound

(b)      Compound X can be prepared in lab. Name this process .

(c)      Name one usage of compound X in our daily life

(d)      Compound Y can react with acidified potassium manganate (VII) solution in a beaker.

(i) Name the product of this reaction

(ii) Name this reaction and state its observation