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Organic Chemistry > Functional group analysis > Flashcards

Functional group analysis Flashcards

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1
Q

Test for [C=C] alkenes

A

add bromine water

goes from orange to colourless

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2
Q

Test for [XC] haloalkanes

A 
add silver nitrate [AgNO3] and nitric acid [HNO3]
place in 50'C water bath
chloroalkane - white precipitate
bromoalkane - cream precipitate
iodoalkane - yellow precipitate
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3
Q

Test for [C=O] carbonyl

A

add 2,4-dinitrophenylhydrazine (2,4-DNP)

orange precipitate forms

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4
Q

Test for [RC=OH] aldehyde

A

add Tollen’s reagent and warm

silver mirror forms

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5
Q

Test for primary and secondary alcohols and aldehydes

A

add acidified potassium achromatic (VI)
warm in water bath
colour change form orange to green

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6
Q

Test for carboxylic acid

A

add aqueous sodium carbonate

effervescence

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Organic Chemistry (2 decks)

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