identification rxn

Question 1

Cr₂O₇²⁻/H⁺ and primary alcohol

Answer 1

orange to green- oxidize into carboxylic acid

Question 1

Alkane and aqueous soloution

Answer 1

insoluble- two layers

Question 2

Amine and aqueous soloution

Answer 2

soluble- dissolve- one layer

Question 3

KMNO₄⁻/H⁺ and primary alcohol

Answer 3

oxidize into carboxylic acid- purple to brown (if acidified), purple to colorless if not

Question 4

Alkene and Br₂(aq)

Answer 4

react quickly orange/brown to colourless ( addition rxn)

Question 5

Alcohol and Br2(aq)

Answer 5

react slowly with UV light as a catalyst

Question 6

Alcohol up to 4 and water

Answer 6

soluble/ polar

Question 7

Alkene and aqueous soloution

Answer 7

insoluble, non polar- two layers formed

Question 8

Ethanol vs propan-1-ol (Boiling points)

Answer 8

Ethanol has a lower boiling point and will vaporize quicker. As alcohol molecules lengthen the attractive forces between them become stronger.

Question 9

Carboxylic acid + Br₂ (aq)

Answer 9

slowly with UV light as a catalyst (subsititution)

Question 10

Alkene and KMNO₄-/H+ or KMNO₄

Answer 10

Purple to brown (addition) - purple to colourless (acified) (oxidation)

Question 11

Carboxylic acid and KMnO₄-

Answer 11

no reaction

Question 12

Alkane and Br₂ (Aq)

Answer 12

slow reaction- catalyzed by Uv light - substitution + HBR

Question 13

Amine and zinc metal

Answer 13

no reaction

Question 13

Carboxylic acid and Zinc Metal

Answer 13

bubbles- gas hydrodgen gas

Question 14

Alkane and Alkene Polarity

Answer 14

Non Polar- two layers in aq

Question 15

Carboxylic Acid Polarity

Answer 15

Polar - one layer in aq