A student has two compounds in two seperate bottles but with no labels on either one....

A student has two compounds in two seperate bottles but with no labels on either one. One is an unbranched alkane, C8H18; the other is 1-hexane, and unbranched alkene, C6H12. What should you see in the following tests:

Octane 1-Hexane

A. Water Solubility

B. Ligroin Solubility

C. Combustion

D. Density vs water

E. Bromine Test

F. Permanganate Test

Solutions

Expert Solution

Qualitative tests for alkane (octane) and alkene (1-hexene)

For C8H18 (Octane)

1. water solubility : Insoluble

2. Ligroin solubility : Soluble

3. Combustion : burn with clean flame, complete combustion to CO2 and H2O

4. density vs water : Less denser than water

5. Bromine test : -ve test, no color change +ve test, decolorizes bromine

6. permanganate test : -ve test, no color change . +ve test

For C6H12 (1-Hexene)

1. water solubility : Insoluble

2. Ligroin solubility : Soluble

3. Combustion : burn with a sooty flame, incomplete combustion to CO and H2O

4. density vs water : Less denser than water

5. Bromine test : +ve test, decolorizes bromine

6. permanganate test : +ve test, purple to light pink

queen_honey_blossom answered 1 year ago

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