ESTERS [dchemlc]

ESTERS [dchemlc]

9th Grade

10 Qs

quiz-placeholder

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ESTERS [dchemlc]

ESTERS [dchemlc]

Assessment

Quiz

Chemistry

9th Grade

Practice Problem

Hard

Created by

Miyuni Thisanga De Almeida

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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what is the functional group of esters?

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Answer explanation

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2.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

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what are the two starting materials needed to produce an ester?

alcohol

carboxylic acid

alkene

alkane

aldehyde

Answer explanation

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e.g. Heating a mixture of ethanoic acid and ethanol with a few drops of concentrated sulfuric acid produces a liquid called ethyl ethanoate.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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what is the catalyst used to produce esters from an alcohol and a carboxylic acid?

conc. Sulphuric acid

dil. Sulphuric acid

conc. Sodium carbonate

conc sodium hydroxide

Answer explanation

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To make ethyl ethanoate,

Starting materials: ethanol and ethanoic acid

Catalyst: concentrated sulfuric acid

Conditions: heat

4.

FILL IN THE BLANK QUESTION

30 sec • 1 pt

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what is the name of the ester formed by reacting ethanol and ethanoic acid?

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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which of the following is not a use of an ester?

perfumes

food flavourings

solvents

liquor production

Answer explanation

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6.

FILL IN THE BLANK QUESTION

30 sec • 1 pt

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name the alcohol used to produce methyl ethanoate.

7.

FILL IN THE BLANK QUESTION

30 sec • 1 pt

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what is the carboxylic acid needed to produce ethyl propanoate?

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