Prac exam prep Flashcards

1
Q

What catalyst + conditions is used for hydrogenation?

A

Nickle

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2
Q

What catalyst + condition is used for the hydration of alcohol?

A

Phosphoric acid 300*c

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3
Q

What catalyst is used for dehydration of alcohol?

A

Conc sulfuric acid

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4
Q

What catalyst is used for the oxidation of alcohols?

A

Acidified potassium dichormate

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5
Q

What is the enthalpy change equation?

A

q=mc∆T (NEGATIVE)

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6
Q

What are the conditions of alkane cracking?

A

Zeolite catalyst and 450*c

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7
Q

What catalyst is used for the esterification of alcohols?

A

Conc sulfuric acid

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8
Q

What is the flame test colour for Lithium?

A

Red

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9
Q

What is the flame test colour for Sodium?

A

Orange yellow

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10
Q

What is the flame test colour for potassium?

A

Lilac

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11
Q

What is the flame test colour for calcium?

A

Brick red

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12
Q

What is the flame test colour for strontium?

A

Crimson

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13
Q

What is the flame test colour for Barium?

A

Apple green

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14
Q

What are the 4 solubility trends for group 2 compounds?

A

All nitrates are soluble
All carbonates are insoluble
Hydroxides increase in solubility down the group
Sulphates decrease in solubility down the group

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15
Q

Wat is used as a test for halides?

A

Nitric acid followed by silver nitrate then aqueous ammonia

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16
Q

What are the 3 observations from the halide test?

A

Cl- White ppt that dissolves
Br- Cream ppt that partially dissolves
I- Yellow ppt that is insoluble

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17
Q

What is observed when CCl4 reacts with water?

A

an immiscible mixture is formed
layers are observed with ccl4 on top

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18
Q

What is observed when SiCl4 reacts with water?

A

White ppt of Si(OH)4
Misty fumes of HCl

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19
Q

What is observed when PbCl4 reacts with hot and cold water?

A

No reaction in cold
Sparingly soluble in hot- colourless solution with white solid

20
Q

What is observed when lead and iodine react?

A

Canary yellow ppt

21
Q

What is observed when NaCl and H2SO4 react?

A

HCl misty fumes

22
Q

What is overserved when HBr and H2SO4 react?

A

Misty fumes of HBr
Yellow orange solution (Br) and Chocking gas (SO2)

23
Q

What is observed when NaI and H2SO4 react?

A

HI misty fumes
Orange brown solution (I2) and rotten egg smell (H2S)
I2 grey solid
I2 purple gas

24
Q

What is the OH+ ligand colour change for Cu 2+?

A

Blue to pale blue

25
What is the OH+ ligand colour change for Fe 2+?
Pale green to dirty green
26
What is the OH+ ligand colour change for Fe 3+?
Yellow to rust brown
27
What is the OH+ ligand colour change for Co 2+?
Pink to blue
28
What is the OH+ ligand colour change for Cr 3+?
Green to grey green
29
What is the NH3 ligand colour change for Cu 2+?
Pale blue to royal blue
30
What catalyst is used to form alcohols from halogenoalkanes?
Reflux with NaOH
31
What is used to reduce aldehydes and ketones?
NaBH4
32
What is used to reduce Carboxylic acids?
LiAlH4
33
What is observed when phenol reacts with bromine?
White ppt and decolourised bromine water (Orange to clear)
34
What is the test for phenol?
Aqueous iron III Chloride gives a purple colour
35
What is tollens reagent, what does it test for and what is observed in a positive result?
Ammoniacal silver nitrate Aldehyde presence Colourless to Silver ppt
36
What is Fehling's solution, what does it test for and what does a positive result look like?
Cu 2+ complex Aldehyde presence Blue to Brick red
37
What is 2,4-DNP, what does it test for and what does a positive result look like?
2,4-Dinitrophenylhydrazine Aldehydes and ketones Yellow orange ppt
38
What is iodoform, what does it test for and what does a positive result look like?
Iodine and aqueous sodium hydroxide CH3CO Yellow ppt of CHI3
39
What catalyst is used for decarboxylation?
Strong heating with Soda Lime (NaOH)
40
What catalyst and conditions are used for the formation of aromatic carboxylic acids?
Heat with alkaline potassium manganate(VII) then add HCl
41
What catalyst is used to form acid chlorides from carboxylic acids?
Phosphorous Pentachloride PCl5 (Dry)
42
What catalyst is used to from amides from Carboxylic acids?
Ammonium carbonate followed by heating with Phosphorous V Oxide P4O10
43
What catalyst is used for the halogenation of benzene?
Bromine- iron III Bromide Chlorine- Aluminium chloride
44
what catalyst is used for the nitration of benzene?
H2SO4
45
What reagent is used to from aromatic amines?
Tin and conc Hydrochloric acid Heated under reflux followed by NaOH
46
What are the 5 solubility rules?
All nitrates are soluble all ammonium and alkali are soluble all carbonates, phosphates and hydroxides are insoluble (Bar those with rule 1 or 2) All chlorides, bromides and iodides are soluble except with Ag, Pb or Hg All sulphate are soluble exept with group Ca, Sr, Ba, Ra or Pb