Exercise 07: Carbon Tetrachloride

Question 1

1. Mix 2 mL of pyridine with 3 mL of 10% sodium hydroxide solution.
2. Heat to boiling and add 1 mL of the sample to be tested.
3. Observe for the result.

Answer 1

Fujiwara’s Pyridine Test

Question 2

1. To 2 mL of the sample solution add 2 drops of aniline and a few drops of alcoholic or aqueous potassium hydroxide.
2. Warm the mixture.
3. Observe the result.

Answer 2

Isonitrile Reaction

Question 3

1. Dissolve about 0.1 g of resorcinol in 2 mL of water, add a few drops of sodium hydroxide solution and finally the liquid containing carbon tetrachloride.
2. Heat the mixture to boiling.
3. Observe the result.

Answer 3

Schwartz’s Resorcinol Test

Question 4

1. To 2 mL of the sample solution.
2. Add a few drops of _____ (it is made by dissolving a few grains on a few mL of aqueous potassium hydroxide solution).
3. Observe the results.

Answer 4

Lustgarten’s Naphthol Test
2. Alpha Naphthol Solution