Ethanal

Question 1

How to show oxidation by acidified potassium manganate

Answer 1

Add potassium manganate and dilute sulfuric acid

warm and shake

Question 2

observation with acidified potassium manganate

Answer 2

solution decolorised

Question 3

how to show oxidation by fehling’s solution

Answer 3

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

Question 4

observation when oxidised by fehling’s solution

Answer 4

red/brown precipitate formed

Question 5

how to conduct oxidation by tollen’s reagent

Answer 5

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

Question 6

observation when oxidised by tollen’s reagent

Answer 6

silver mirror formed