Some Reactions with Hydrocarbons

Question 1

why is carbon tetrachloride a good solvent for preparing the bromine solution? (3)

Answer 1

1. it is miscible with Br and all samples used
2. it is inert
3. minimizes bromine evaporation due to bromine being dilute in solution

Question 2

how is the test waste of the Br tests managed?

Answer 2

Br is an oxidizer, so a reducer must be added (K2SO4) and then placed in halogenated bottle

Question 3

How can you tell if the Br waste has been managed?

Answer 3

colour change from brownish-red to clear and colourless

Question 4

how is the waste of the KMnO4 tests managed?

Answer 4

KMnO4 is an oxidizer, so reducer must be added (K2SO3), then neutralized with acid, filtered to separate solids (garbage) and the filtrate is placed in the non-halogenated bottle

Question 5

why are metal acetylides extremely hazardous?

Answer 5

likely to explode

Question 6

how are metal acetylides treated?

Answer 6

decomposing with 6M HNO3 and neutralizing with a base (NaOH), and put into non-halogenated bottle

Question 7

which reaction type gives off gas?

Answer 7

substitution