A mixture of compound A(C10H21COOCH3)?

Posted on 2015-09-23 06:36:00 in Chemistry by ROBERT

A mixture of compound “A” (C10H21COOCH3), a colourless liquid, and excess sodium hydroxide solution was heated under reflux for 3 hours. The reaction mixture was then distilled until 10mL of distillate had been collected. The reaction mixture was then cooled and acidified with excess hydrochloric acid. A white precipitate formed which was filtered and washed with cold distilled water. The distillate was redistilled collecting the fraction between 630C and 660C.

i. Name any functional groups present in A. (1 mark)

ii. What observation would lead you to decide that the reflux reaction was complete? (1 mark)

iii. Write balanced equations for the reactions which occur during reflux and in forming the white precipitate. (2 marks)

iv. Name the white solid formed following addition of HCl. (1 mark)

v. Name the liquid which was distilled off between 630C and 660C and any functional groups it contains. (2 marks)

vi. Write an equation to show what happens if a lighted match is placed near a sample of the distillate. (2 marks)

vii. Explain why one of the final products is soluble in water and the other not. (2 marks)

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