Ethanal Flashcards

1
Q

How to show oxidation by acidified potassium manganate

A

Add potassium manganate and dilute sulfuric acid

warm and shake

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2
Q

observation with acidified potassium manganate

A

solution decolorised

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3
Q

how to show oxidation by fehling’s solution

A

add fehling’s solution 1 and 2 to a test tube
swirl the contents so blue precipitate dissolves
add ethanal, heat gently, shake

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4
Q

observation when oxidised by fehling’s solution

A

red/brown precipitate formed

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5
Q

how to conduct oxidation by tollen’s reagent

A

add silver nitrate and sodium hydroxide to a test tube
add ammonia until preciptate dissolved
add ethanal, shake and heat

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6
Q

observation when oxidised by tollen’s reagent

A

silver mirror formed

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