[ioke09]

How would you start the problems below? Would the answer be A, B, E, and F for the first one? I know that for a hydrogen bond that hydrogen needs to be covalently bonded to F, O, or N, but is there something else needed? I don't think it's this simple.

Thank you.

1.   Choose all substances with a hydrogen atom that would participate in hydrogen bonding with an appropriate acceptor atom.

A.   CH2CHCH2CH3    1-butene
B.   CH3CONH2    acetamide
C.   C3H6    cyclopropane
D.   C6H6    benzene
E.   CH3CH2OH    ethanol
F.   CH3NH2    methylamine
G.   None


2.   Choose all substances with a hydrogen atom that would participate in hydrogen bonding with an appropriate acceptor atom.

A.   (HO)2SO2    sulfuric acid
B.   CH3CH2CH2OH    propanol
C.   FCCF    difluoroacetylene
D.   NF3    nitrogen trifluoride
E.   CH3CHCHCH3    cis-2-butene
F.   (HO)2SO    sulfurous acid
G.   None

3.   Choose all substances with a hydrogen atom that would participate in hydrogen bonding with an appropriate acceptor atom.

A.   H3PO4    phosphoric acid
B.   (CH3)2CO    acetone
C.   H2CCHCH3    propene
D.   CH3COCH3CH2    methylethylketone
E.   (CH3)3N    trimethylamine
F.   CHF2CH3    1,2-difluoroethane
G.   None

4.   Choose all substances with a hydrogen atom that would participate in hydrogen bonding with an appropriate acceptor atom.

A.   SiF4    silicon tetrafluoride
B.   H2SO3    sulfurous acid
C.   HCN    hydrogen cyanide
D.   H2Se    hydrogen selenide
E.   CH3CH2OCH2CH3    diethyl ether
F.   IBr    iodine bromide
G.   None

5.   Choose all cases in which the liquid state of the pure substance exhibits hydrogen bonding.

A.   HI    hydrogen iodide
B.   CBr4    carbon tetrabromide
C.   CHCl2CH3    1,1-dichloroethane
D.   C6H12    cyclohexane
E.   I2    diiodine
F.   CH3CH2NH2    ethylamine
G.   None

      
   

      

[rabolisk]

It is that simple, but the answer for 1 is not A, B, E, and F.

[ioke09]

I think I figured out the first one, would it be B, E, and F?