Data Table 4. Cycloalkanes. Question Answer Bond angles between the carbon atoms

Question

Data Table 4. Cycloalkanes.

Question

Answer

Bond angles between the carbon atoms of cyclopropane

Is cyclopropane more or less stable than propane? Explain why.

Bond angles between the carbon atoms of cyclobutane

Is cyclopropane more or less stable than cyclobutane? Explain why.

Bond angles between the carbon atoms of cyclohexane in “chair” form.

Is “chair” form more or less stable than “boat” form? Explain why.

Questions

Part A

What is the difference in the number of carbon atoms between methane and ethane and between ethane and propane?

Part B

What is the difference in the number of hydrogen atoms between methane and ethane and between ethane and propane?

Part C

What is the formula for a 6 carbon alkane?

Question

Answer

Bond angles between the carbon atoms of cyclopropane

Is cyclopropane more or less stable than propane? Explain why.

Bond angles between the carbon atoms of cyclobutane

Is cyclopropane more or less stable than cyclobutane? Explain why.

Bond angles between the carbon atoms of cyclohexane in “chair” form.

Is “chair” form more or less stable than “boat” form? Explain why.

Explanation / Answer

1. Cyclo propane carbon carbon bond angle   = 60 degrees.

2. cyclopropane is less stable than propane. Due to high bond angle strain.

3. Bond angles between the carbon atoms of cyclobutane = 90 degrees.

4.   cyclopropane less stable than cyclobutane. Because The bond angle strain is more in cyclopropane .so that it is more reactive.

5. Bond angles between the carbon atoms of cyclohexane in “chair” form   = 109. 5 degrees.

6.   “chair” form more stable than “boat” form. Due to less steric hindrance in chair form.

Part A

difference in the number of carbon atoms between methane and ethane = 1 carbon between ethane and propane= 1 carbon.

Part B

difference in the number of hydrogen atoms between methane and ethane = 2 hydrogens

between ethane and propane = 2 hydrogens.

Part C

formula for a 6 carbon alkane = Hexane (C6H14)

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