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
*Question 1. Phenylamine can be made using nitrobenzene as the starting material. Name this
type of reaction.
reduction
nitration
hydrolysis
oxidation
dehydration

*Question 2. What reagents are used to bring about this change?
sodium tetraborohydride
tin
concentrated hydrochloric acid
iron
dilute hydrochloric acid

*Question 3. What is the correct equation for this reaction?

*Question 4. Phenylamine reacts with nitrous acid to form a diazonium salt. Which two reagents
would you use to prepare the diazonium salt?
NaNO2 and dilute HCl (aq)
NaNO3 and dilute HCl (aq)
NaNO3 and concentrated HCl (aq)
NaNO2 and concentrated HCl (aq)

*Question 5. What essential conditions would be necessary?
Temperature below 8 degrees celsius
Temperature above 8 degrees celsius
Temperature below 80 degrees celsius
Temperature above 80 degrees celsius

*Question 6. What is the balanced chemical equation for this change?
C6H5NH2 + 2H+ + NO2- --> C6H5N2 + 2H2O
C6H5NH2 + H+ + NO2- --> C6H5N2+ + 2H2O
C6H5NH2 + 2H+ + NO2- --> C6H5N2+ + 2H2O
C6H5NH2 + 2H+ + NO2- --> C6H5N2+ + H2O
C6H5N2 + 2H+ + NO2 --> C6H5N2+ + 2H2O

*Question 7. The diazonium salt formed in the previous question, will couple with phenol to form
a useful substance, X. What essential conditions would be necessary?
Temperature below 8 degrees celsius
Temperature above 8 degrees celsius
Trace of acid
Trace of alkali

*Question 8. What is the balanced chemical equation for this change?
C6H5N2+ + C6H5OH + --> C6H5N2C6H4OH + 2H+
C6H5N2+ + C6H5OH + --> C6H5N2C6H5OH + H+
C6H5N2+ + C6H5OH + --> C6H5N2C6H4OH + H+
C6H5N2+ + C6H5OH + --> C6H4N2C6H4OH + H+
C6H5N2 + C6H5OH + --> C6H5N2C6H4OH + H+

*Question 9. Give the use for X.
enzyme
flavouring
dye
reagent
solvent

*Question 10. Ethylamine and phenylamine are two organic nitrogen compounds. Which
structural feature on each molecule accounts for its basicity?

*Question 11. Which of the two compounds is the stronger base?
ethylamine
phenylamine
both are the same basicity

*Question 12. What are other names for the condensation polymers formed by amino acids?
polyproteins

polypeptides
pepsin
*Question 13. How could you hydrolyse a dipeptide?
Use acid
Use alkali
Boil it
All of the above
proteins
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