Which is a product of a condensation reaction? 1. o2 2. co2 3. h2 4. h2o

is a product of a condensation reaction.

Explanation:

In a condensation reaction, two molecules are combined to produced a large molecules along with removal of a water molecule.

For an example, let's consider aldol condensation reaction.

In aldol condensation reaction, an enolate anion reacts and combines with an aldehyde or ketone molecule follwed by dehydration. In that dehydration step  , gets removed and an unsaturated carbonyl product is formed.

Usually, are produced as a by product of a decomposition reaction.

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