Chem lab experiment 12

Question 1

a test to see the solubility of carboxylic groups?

Answer 1

solubility of carboxylic acid in water

Question 2

what was soluble in the experiment of test to see the solubility of carboxylic groups? give its chemical formula

Answer 2

Stearic acid, (CH3CH2)16COOH

Question 3

what were the chemicals being used in the test of solubility of carboxylic acid in water? give its chemical formulas

Answer 3

Stearic acid CH3CH2)16COOH
Acetic acid CH3COOH
Benzoic Acid C6H5COOH

Question 4

what was the reagent used in the action of an oxidizing agent of the carbonyl group?

Answer 4

Potassium permanganate

Question 5

what was the oxidizing agent in the experiment action of an oxidiizng agent on the carbonyl gorup? Give its chemical formula

Answer 5

potassium permanganate (KMnO4)

Question 6

what was the catalyst used in the action of an oxidizing agent of the carbonyl group?

Answer 6

Heat

Question 7

What were the chemical involved in the Action of an oxidizing agent on the carbonyl group? give its chemical formula

Answer 7

Acetic Acid (CH3COOH)
Benzoic Acid (C7H6O2)
Formic Acid (CH2O2)
Oxalic Acid (C2H2O4)

Question 8

what were the reactions of the chemicals of the action of an oxidizing agent on the carbonyl group when added with the oxidizing agent and was heated?

Answer 8

Acetic Acid and Benzoic Acid has no reaction
Formic Acid become
7CH2O2+2KMnO4—-> 6CO2+8H2O+2Mn+KOH
Oxalic Acid becomes
2KMnO4+5H2C2O4+3H2SO4 —–> 10CO2+4H2O+2Mn+KOH

Question 9

what are the three experiments of the preparation of salicylic acid solution?

Answer 9

reaction with ferric ions
Reaction with Bromine Water
Reaction with millon’s reagent

Question 10

what were the chemical present in the preparation of salicylic acid solution? give its chemical formulas

Answer 10

salicylic acid
ferric chloride or ferric nitrate solution
Bromine
Millon’s reagent

Question 11

what was the color during the reaction of ferric ions to the salicylic acid solution? what was the chemicals present in the solution?

Answer 11

purple, Ferric salicylate and hydrochloric acid
Fe(C6H4OHCOOH) and HCl

Question 12

what does the color purple indicate in the reaction with ferric ions and preparation of salicylic acid solution?

Answer 12

the purple indicates the presence of phenols

Question 13

what chemical reacted to the presence of phenols?

Answer 13

Ferric Chloride or FeCl3

Question 14

what was the chemical of the solution of reaction with ferric ions?

Answer 14

Fe(C6H4OHCOOH)3

Question 15

what was the test used to indicate the presence of phenol? what were the reagents used?

Answer 15

Reaction with Ferric Ions - FeCl3
Reaction with bromine water - Br2
Reaction with millon’s reagent - HgN2O6

Question 16

what test was used to indicate the presence of phenol in the mixture? What were the colors? Give its chemical formula

Answer 16

Reaction with Ferric Ions - Fe(C6H4OHCOOH) - Violet
Reaction with bromine water - 2,4,6-tribronophenol- yellow ptt
Reaction with millon’s reagent - C6H4OHCOOHg - red/rose color

Question 17

what reagent was used during the reaction of a violet color?

Answer 17

ferric chloride

Question 18

what reagent was used during the presence of a rose/red color?

Answer 18

millon’s reagent

Question 19

what reagent was used to indicate the presence of phenol which resulted to the yellow precipitate?

Answer 19

bromine