Tricky Hydrocarbon Names and Numbers

15 Points Per Correct Answer - No time limit  

1. Which of the following is the only isomer of butane, and is also referred to as isobutane? 2-ethylpentane 2-ethylpropane 2-methylpropane 2-methylpentane

2. Which of the following is not a possible isomer of hexane? 3-methylpentane 2,3-dimethylbutane methylbutane 2-methylpentane

3. How many carbon atoms does 3,4-dimethyloctane have? 10 11 9 8

4. Which of the following hydrocarbons has 9 carbon atoms? all of these 2,3-dimethylhexane 3,4-dimethylheptane 3-methyldecane

5. How many carbon atoms would be in 3,5-diethyl-undecane? Answer: (number)

6. Which of the following straight-chained alkanes has the most isomers? tricosane hentriacontane docosane triacontane

7. Which of the following hydrocarbons has more than 20 carbon atoms? 3,4-diethylpentadecane 2,3,4,6-tetramethylnonadecane 4-methylheptadecane 5-ethyloctadecane

8. 2,3-dipropylnonadecane has fewer than 23 carbon atoms. True False

9. Which of these isomers cannot exist? 2,3-dimethylpentane 6,7-dimethylpropane 2-methylheptane 2-methylbutane

10. Which of the following is an isomer of nonadecane?(C19H40) 3-methyloctadecane 5-ethyl-3-propyltetradecane 2,4-dimethylheptadecane all of these