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Hydrocarbons and chemistry of functional groups

Can you please help with the following review

1. Which of the following amino acids are chiral?
a) CH3CH(NH2)COOH
b) CH2(NH2)COOH
c) CH2(OH)CN(NH2)COOH

2.Identify the functional groups in each of the following molecules:
a) CH3CH2COCH2CH2CH3
b) CH3COOC2H5
c) CH3CH2OCH2CH2CH2CH3

3. How many liters of air (78% N2, 22% O2 by volume) at 20 degrees celcius and 1.00 atm are needed for the complete combustion of 1.0 L of octane, C8H18, a typical gasoline component that has a density of 70 g/mL?

4. Isopropanol is prepared by reacting propylene (CH3CHCH2) with sulfuric acid, followed by treatment with water.
a) show the sequence of steps leading to the product. What is the role of sulfuric acid?
b) draw the structure of an alcohol that is an isomer of isopropanol.
c) Is isopropanol a chiral molecule?
d) what property of isopropanol makes it useful as a rubbing alcohol?

5. Under conditions of acid catalysis, alkenes react with water to form alcohols. As in the case with hydrogen halides, the addition reaction in the formation of alcohols is also governed by Markovnikov's rule. An alkene of approximate molar mass of 42g reacts with water and sulfuric acid to produce a compound that reacts with acidic potassium dichromate solution to produce a ketone. Identify all the compounds in the preceding steps.

Solution Preview

1. Which of the following amino acids are chiral?
a) CH3CH(NH2)COOH (this is chiral)
b) CH2(NH2)COOH
c) CH2(OH)CH(NH2)COOH (this is chiral)

A chiral molecule contains carbon atom to which, four different groups are attached. (Please refer to attached JPG file for structures of the above amino acids).

2.Identify the functional groups in each of the following molecules:
a) CH3CH2COCH2CH2CH3
- Ketone group (R-CO-R)

b) CH3COOC2H5
- Ester group (R-COO-R)

c) CH3CH2OCH2CH2CH2CH3
- Ether group (R-O-R)

3. How many liters of air (78% N2, 22% O2 by volume) at 20 degrees celcius and 1.00 atm ...

Solution Summary

Hydrocarbons and chemistry of functional groups are examined.

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