H
Formal charge calculations for (b, c) as of part (a)
Which resonance form in the following pairs would contribute more to the Hybrid (more stable)? Explain the reason for your choice.
a) CH3CH CH CH OH CH3CH CH CH OH Carbon of the other structure do not meet the octet rule
O CH3 More stable because of more covalent bonds
O c) CH2 C CH3 CH2 O C CH3 Negative charge resides on more electronegative atom.
O C NH2
b)
CH3
C NH2
3 (8.0 ) II a) Write a dash formula for each of the following compounds showing any unshared electron pairs. b) predict the hybridization of the indicated atom in each …show more content…
Which compound in each of the following pairs would have the higher boiling point? Explain a reason for your answer.
a) CH3CH2CH2OH or CH3CH2OCH3 Alcohol, because of hydrogen bonding
b)
or
O Ketone, because of dipole-dipole intractions
c)
N H
or
N CH3
Primary amine, because of hydrogen bonding
4 (8.0) III 1. a) Draw structures of three alkyl bromide with the formula C4H9Br b) Classify each as to whether it is primary, secondary, or tertiary alkyl bromide. CH3CH2CH2 CH2Br primary
CH3 CH3CH2 CHBr CH3 CH3 C Br tertiary CH3 (6.0) 2. Write a condensed structural formula for each of the following compound. O seconday
a)
O (CH3)2CHCOCH(CH3)2 or (CH3)2CH C CH(CH3)3
b)
NH
CH3 CH3CH2CH(CH3)CH2NHCH2CH3 or CH3CH2 H
CHCH2NCH2CH3
OH
OH
CH2 CH2
CH CH CH CH CH3
c)
5 (15.0) IV 1. Draw a structure for compounds that meet the following descriptions.
a) Two amines with the formula C3H9N
CH3CH2CH2NH2
and
CH3NHCH2CH3
and
Many other possibilities.
b) Two ketones with the formula C5H10O
O CH3CH2 and O CH2CH3 CH3 C CH2CH2CH3