1. Which of the following observations was troublesome to 19th century chemists? a. Benzene contains...

1. Which of the following observations was troublesome to 19^th century chemists?

a.	Benzene contains more hydrogen atoms than expected.
b.	Benzene does not undergo combustion.
c.	Benzene does not react similarly to alkenes.
d.	Benzene reacts similarly to alkenes.

2. Which of the following is an appropriate definition of an aromatic compound?

a.	Any compound that contains one or more benzene-like rings
b.	Any compound that contains one or more 6-membered rings.
c.	Any compound that contains a double bond within a 6-membered ring.
d.	Any compound with a pleasant odor.

3. Which of the following is true of the reactivity of benzene?

a.	It reacts readily with bromine to form 1,2-dibromobenzene.
b.	It can be readily hydrogenated with H₂/Pd.
c.	It reacts readily with HBr to form bromobenzene.
d.	None of the above is true.

4. Which of the following statements about the structure of benzene is true?

a.	All the C—C bonds in benzene are longer than a typical C=C.
b.	All the C—H bonds in benzene are longer than a typical C—H bond.
c.	The benzene molecule contains alternating double and single bonds.
d.	Benzene is a 1:1 mixture of two equilibrating structures.

a.	o-dimethylbenzene	c.	p-diethylbenzene
b.	m-dimethyllbenzene	d.	m-diethylbenzene

11. What is produced when benzene reacts with chlorine in the presence of an iron catalyst?

a.	only chlorobenzene
b.	chlorobenzene and chlorine atoms
c.	chlorobenzene and hydrogen chloride
d.	chlorobenzene and water

12. What reagents are used to convert nitrobenzene to aniline?

a.	H₂ in the presence of a Ni catalyst
b.	sulfuric acid
c.	nitric acid in the presence of sulfuric acid
d.	Ni in the presence of sulfuric acid

13. The conversion of nitrobenzene to aniline is an example of which of the following?

a.	reduction	c.	substitution
b.	oxidation	d.	none of these

Expert Solution

queen_honey_blossom answered 1 year ago

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