What statement does NOT apply to the boiling points of alkanes? The boiling poin

Question

What statement does NOT apply to the boiling points of alkanes? The boiling point increases as the length of the carbon chain increases. Straight chain alkanes have a higher boiling point than their branched isomers. Because they are nonploar, alkanes have lower boiling points than other organic compound s of similar molar mass. The boiling points are affected by Van der Waals attraction. The boiling points are influenced by hydrogen bonding. The preferred conformation of butane is given by which of the following Newman project formulas?

Explanation / Answer

Q12

this is a cyclohexane, due to the cycle and 6 carbon count

count is , 1 = bromo, 3 = ethyl

These both are in equatorial confiruation, and Hydrogens are in axial configuraiton, thereofre they are clearly CIS configuration

choose E, since C can't be due to incorrect count of Br, Ethyl

Q13

a) this is true, more carbons, more BP

b) this is also true, they have higher interactions, therefore higher BP

c) this is also true, C-H have only london dispersion forces interactions

d) This ia also true, their interactions will increas BP

E) false, since they will NOT form H-bonds

Q14

For butane:

we require the ANTI configuration

which has CH3 groups directlyu opposite (180 degrees) from each other

so

the answer is A

ignore B andD since those are not correct newman priojections of butane

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.