H2O. That's why its called dehydration reaction
water
dehydration synthesis involves the removal of water which is favorable because water is a samll stable molecule. Hydrogen and Hydroxyl make water so these are the species removed.
This chemical reaction is called dehydration.
This isn't really a question, but ... When two monosaccharide molecules join to form one disaccharide molecule, a molecule of water is released. This is called a dehydration (or synthesis) reaction. So in the reverse reaction, when one disaccharide is broken down into two monosaccharides, a molecule of water must be added. This is called an hydrolysis reaction.
Dehydration synthesis is when two molecules are chained together and a water molecule is ejected from the coupling. A hydrolysis reaction is when a water molecule is split and the coupling between two molecules is also split. Dehydration synthesis is the reverse reaction of hydrolysis, and vice versa.
A fat molecule forms when glycerol joins with three fatty acids as three water molecule are removed during dehydration reaction.
Gain in water during a chemical reaction
A Water molecule or a molecule of H2O is released when a peptide bond is formed between two molecules.
Water is the molecule that is split during the light reaction of photosynthesis when releasing oxygen.
Three molecules of water are released when the four glucose molecules are joined.
The chlorophyll molecule.
dehydration synthesis involves the removal of water which is favorable because water is a samll stable molecule. Hydrogen and Hydroxyl make water so these are the species removed. Most simply dehydration=removal of water. H + OH leave the reaction as water.