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AS Chemistry > OCII > Flashcards

OCII Flashcards

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1
Q

Strongest C-X bond based on bond enthalpy

A

C-F

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2
Q

Type of reaction: Halogenoalkane —> alcohol

A

Nucleophillic substitution

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3
Q

Reagents: halogenoalkane —> alcohol

A

Aqueous solution of NaOH or KOH

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4
Q

Identify the nucleophile: Halogenoalkane —> alcohol

A

Hydroxide ion

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5
Q

Type of reaction: Halogenoalkane —> alkene

A

Elimination

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6
Q

Reagents needed: Halogenoalkane —> alkene

A

HOT Ethanolic potassium/sodium hydroxide

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7
Q

What acts as a base in an elimination reaction

A

Hydroxide ion

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8
Q

Type of reaction: halogenoalkane —> silver halide

A

Nucleophillic substitution

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9
Q

Identify the nucleophile in halogenoalkane —> silver halide

A

Water

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10
Q

Colour of silver chloride

A

White

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11
Q

Colour of silver bromide

A

Cream

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12
Q

Colour of silver iodide

A

Yellow

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13
Q

Type of reaction: halogenoalkane —> amine

A

Nucleophillic substitution

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14
Q

Reagent + condition : halogenoalkane —> amine

A

HOT ethanolic solution of excess ammonia , under pressure

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15
Q

Type of reaction: halogenoalkane —> nitrile

A

Nucleophillic substitution

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16
Q

Nucleophile: halogenoalkane —> amine

A

Ammonia

17
Q

Nucleophile: Halogenoalkane —> nitrile

A

Cyanide ion (CN-)

18
Q

Reagent and condition: halogenoalkane —> nitrile

A

Ethanolic solution of potassium cyanide heated under reflux

19
Q

Type of reaction: alcohol —> halogenoalkane

A

Nucleophillic substitution

20
Q

Reagent needed to produce choloroalkane

A

PCl5

21
Q

Products of nucleophilic substitution of alcohol + PCl5

A

RCl + HCl + POCl3

22
Q

Reagent needed for alcohol —> bromoalkane

A

50% sulphuric acid and potassium bromide

23
Q

Two reactions to produce bromoalkanes

A
  1. 2KBr + H2SO4 —> HBr + K2SO4
  2. Alcohol + HBr —> bromoalkane
24
Q

Reagent needed for alcohol —> iodoalkane

A

Red phosphorus + iodine

25
Q

Two reactions for production of iodoalkane

A
  1. 2P + 3I2 —> 2PI3
  2. Alcohol + PI3 —> iodoalkane + H3PO3
26
Q

Type of reaction: alcohol —> alkene

A

Elimination

27
Q

Reagent needed for elimination of alcohol

A

Hot concentrated phosphoric acid (H3PO4)

28
Q

Combustion of alcohol reaction

A

Alcohol + oxygen —> carbon dioxide + water

29
Q

Test for aldehydes

A

Add feelings solution- presence of aldehyde = RED PPT, no aldehyde = REMAINS BLUE

30
Q

Test for carboxylic acids

A

Add sodium carbonate/sodium hydrogen carbonate then conduct limewater test
If CO2 produced, carboxylic acid present

31
Q

What type of alcohol can produce a ketone

A

Secondary

32
Q

Oxidation of secondary alcohol reaction

A

Secondary alcohol + [O] —> ketone

33
Q

Reagents/conditions needed for oxidation of secondary alcohol

A

Acidified potassium dichromate solution (potassium dichromate in a solution of dilute sulfuric acid) under reflux

34
Q

What type of alcohol oxidises to produce an aldehyde

A

Primary

35
Q

What type of alcohol is oxidised to produce a carboxylic acid

A

Primary

36
Q

Reaction for oxidation of primary alcohol to aldehyde

A

Primary alcohol + [O] —> aldehyde

Distillation, acidified potassium dichromate (K2Cr2O7)

37
Q

Reaction of oxidation of alcohol to produce carboxylic acid

A

Primary alcohol + [O] —> carboxylic acid
UNDER REFLUX, acidified potassium dichromate

AS Chemistry (5 decks)

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