What is the Reaction of aldehyde with sodium hydroxide?

Answer 1

This is actually not a considered a chemical reaction but rather simply a dilution problem. Sodium hydroxide is considered a strong base and as such is able to completely and fully disassociate in aqueous solution. The heat evolved as a result of mixing solid sodium hydroxide with water is due to the the -OH ions incredible stability. heat is emitted as a result of the chemical species being brought to a lower energy state. This phenomena strong enough that sodium hydroxide crystals act as a powerful dessicant (it readily absorbs moisture from the air).

NaOH(s) +H2O(l)----------> Na(aq) + -OH(aq) + H2O(l)

also H2O can be found on both sides of this supposed "reaction" and thus cancel each other out

Answer 2

CH3CHO + CH3CHO + NaOH ---> CH3CHO + NaCH2CHO --->CH3CHOHCH2CHO ---> CH3CH=CHCH=O is produced by this basic aldol reaction.

Step 1 is proton removal by the base

Step 2 is attack of the methylene carbanion on a nearby aldehyde, forming the 3 hydroxy butanal, which may dehydrate in Step 3 to form the alpha,beta unsaturated aldehyde 2-butenal

Additional anion formation at the same carbon before dehydration could lead to addition of another hydroxyethyl group, and after dehydration, the hydrogen on C4 becomes labile, so that small polymers are possible. There are other side reactions.

Answer 3

With the presence of an aldehyde and sodium hydroxide, an aldol condensation reaction will occur forming an aldol, and eventually an enal.

Answer 4

Yes it does. The caustic deprotonates the methanol to form methoxide. It is used by biodiesel manufacturers to transesterify triglycerides to make biodiesel.

Answer 5

A chemical reaction doesn't occur.

Answer 6

nnnnn