Boiling point

[Gasedo]

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1. I understand, it is correct, but 2. I don't.

1. Which will have the higher boiling point?
A CH3Br
B CH3CH3

Ans. A

2. Which will have the higher boiling point?
A CH3F
B CH3CH3

Ans. B

 

[BenignDMD]

That does not make sense. It is wrong. Look up the bp's of ethane and flouromethane on msds. CH3F will have a higher bp for sure due to the dipole between the C and F.

 

[flyermann1]

well, i'm not sure which book u r using. I used Kapaln one and i found some errors in the text, i mean not a major one but yes there are some typo errors. I personally think the CH3F is the answer, b/c F has higher electronegativity and will be more polar. To be on the safe side, refer back to your orgo text

 

[Gasedo]

well, i'm not sure which book u r using. I used Kapaln one and i found some errors in the text, i mean not a major one but yes there are some typo errors. I personally think the CH3F is the answer, b/c F has higher electronegativity and will be more polar. To be on the safe side, refer back to your orgo text

That's what I thought too...

 

[Baylor83]

1. I understand, it is correct, but 2. I don't.

1. Which will have the higher boiling point?
A CH3Br
B CH3CH3

Ans. A

2. Which will have the higher boiling point?
A CH3F
B CH3CH3

Ans. B

I think question 2 is trying to test your knowledge on boiling point based on molecular size but I guess it has badly been written... just my opinion.

 

[superduper12]

Ethane Boiling point: -89°C
Fluoromethane boiling point: -78 C
Bromomethane boiling point: 3 C

bp: CH3Br > CH3F > CH3CH3

It should be A.

 

[jdent]

YEah the answer to both is A, they are wrong.