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Chemistry Y13 > Tests > Flashcards

Tests Flashcards

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1
Q

What are the reagents and conditions for aromatic amines?

A

Reagents: Tin (Sn) , HCl
Conditions: conc HCl

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2
Q

What does 2,4-dinitrophenylhydrozine identify?

A

Carbonyl groups:

  • aldehydes
  • ketones
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3
Q

What does K2Cr2O7 + dilute H2SO4 identify?

A
  • primary/secondary alcohol

- aldehyde

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4
Q

What does Tollen’s reagent identify?

A

Aldehydes

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5
Q

What does bromine water identify?

A

Alkenes

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6
Q

Give the test for carboxylic acids?

A

Reagent: Magnesium Carbonate
Observation: Effervesces + gives off CO2

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7
Q

What type of reaction is a aromatic amines reaction?

A

Reduction reaction

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8
Q

Give the two observations when bromine reacts with phenol?

A

Decolourises

White precipitate

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9
Q

What does blue litmus solution identify?

A

Phenol

Carboxylic acids

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10
Q

What does aqueous silver nitrate identify?

A

Haloalkanes

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11
Q

Give the test for phenols + carboxylic acids?

A

Reagent: blue litmus solution
Observation: turns blue litmus red

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12
Q

Give the test for Haloalkanes?

A 
Reagent: aqueous silver nitrate
Observation: 
White precipitate (Cl)
Cream precipitate (Br)
Yellow precipitate (I)
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13
Q

What does magnesium carbonate identify?

A

Carboxylic acids

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14
Q

Ketones reduce to make what?

A

Secondary alcohols

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15
Q

Secondary alcohols oxidise to make what?

A

Ketones

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16
Q

Primary alcohols can be oxidised to make what?

A

1st - aldehyde

2nd - carboxylic acid

17
Q

What is made when an aldehyde is reduced?

A

Primary alcohol

18
Q

Give reducing agent

A

NaBH4

19
Q

Give the test for Alkenes?

A

Bromine water

Orange -> colourless

20
Q

What is created when an alcohol is heated under reflux with conc H2SO4?

A

Alkene

21
Q

Give test for aldehyde?

A

Tollen’s reagent

Silver mirror

22
Q

Give test for carbonyls?

A

2,4dinitrophenylhydrozine

Orange precipitate

23
Q

Test for primary, secondary alcohols + aldehydes?

A

K2Cr2O7
H2SO4

Orange -> green

24
Q

What is created when a primary alcohol is refluxed with K2Cr2O7?

A

Carboxylic acids

Chemistry Y13 (7 decks)

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