Functional Group Tests

What can be oxidized by H+/KMnO4?

Alcohols, alkanals, alkenes and alkynes

What would be seen if H+/KMnO4 was combined with an alcohol?

Colour change from purple to brown

What would you see if a basic solution was added to a piece of red litmus paper?

The paper would change from red colour to blue

What would you see if an acidic solution was added to a piece of blue litmus paper?

The paper would change from blue to red

What type of compounds would react with bromine water?

Alkenes and alkynes

What would an observation be if bromine water was added to an alkene?

Colour change from orange to colourless

Which type of compound reacts with Tollen's reagent?

Alkanals and terminal alkynes

Which element is reduced when Tollen's reagent reacts with an alkanal?

Silver (Ag)

If Na metal bubbles on contact with an organic compound, what type of compound is it?

Alcohol or alkanoic acid

What type of compound would cause an orange precipitate to form when combined with 2,4-DNP?

Alkanals and alkanones

Which types of organic compounds react with Cr2O72-?

Alkanals, primary or secondary alcohols, alkenes and alkynes

What colour does orange Cr2O72- solution turn when it's reduced?

Green

? + NaHCO3 → RCOONa + H2O + CO2

RCOOH (alkanoic acid)

What observations can be made when alkanoic acid reacts with NaHCO3?

Fizzing

What observations can be made when Shiff's base is mixed with a ketone?

None - they do not react

Under what conditions does KMnO4 become purple when reacting with an alkene?

Cold and dilute

If an immiscible layer forms when an alcohol is added to water, what does this show about the alcohol?

It has a long carbon chain

What property must a compound have to be soluble in water?

Polar