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During your practical work you performed a first-hand investigation to distinguish between an alkene and the corresponding alkane - HSC - SSCE Chemistry - Question 16 - 2005 - Paper 1
Question 16
During your practical work you performed a first-hand investigation to distinguish between an alkene and the corresponding alkane. (a) Name the alkene used in your ... show full transcript
Worked Solution & Example Answer:During your practical work you performed a first-hand investigation to distinguish between an alkene and the corresponding alkane - HSC - SSCE Chemistry - Question 16 - 2005 - Paper 1
Step 1
Step 2
Identify a potential hazard in your investigation, and outline how you addressed this hazard.
Answer
A potential hazard during the investigation was the use of hazardous organic solvents. To address this hazard, I ensured proper ventilation in the laboratory and wore appropriate personal protective equipment, including gloves and goggles, to prevent skin and eye contact.
Step 3
Outline the procedure you used for your first-hand investigation.
Answer
The procedure involved adding a few drops of bromine solution to the sample of the alkene in a test tube. I observed the color change of the bromine from brown to colorless, indicating that the alkene was present. For the alkane, I conducted a similar test and noted that there was no decolorization of bromine, confirming the absence of unsaturation.