CHEM 1060 Lab 1: Alkanes, Alkenes and Alkynes 1. Consider the combustion of hexane C6H14 and cyclohexene C6H10. Which gives a sootier flame and why? 2. Write the equation showing the bromination of hexane. 3. Why is the UV light needed for the bromination of hexane? 4. What is the purpose of Al,0; in the reaction? 5. How was the ethene gas collected during the experiment? 6. What were three tests used to determine if ethene had been produced? 7. What is another name for ethene? 8. What was the solid used in this experiment to produce ethyne gas? A flame test is used for ethyne and ethene in the two videos. Which molecule gives the brightest flame? Explain why this occurs. (Hint: Determine the structures of these molecules and use that structure in your answer.) 9. 10. What is another name for ethyne