A hydrolysis reaction results in which two of the following?
Water is split apart.
Two molecules are split apart.
Water is formed.
Two molecules are combined.
The Correct Answer and Explanation is:
Correct Answer:
- Water is split apart.
- Two molecules are split apart.
Explanation
A hydrolysis reaction is a chemical process in which a molecule is broken down into two or more smaller molecules through the addition of water. The term “hydrolysis” comes from the Greek words “hydro” (water) and “lysis” (to break), indicating that water is used to break chemical bonds.
In this reaction, a water molecule is split into its hydrogen (H⁺) and hydroxide (OH⁻) components. These components are then used to cleave a bond in the target molecule. Specifically, one fragment of the original molecule gains a hydrogen atom, while the other gains a hydroxyl group. This is why “water is split apart” is a correct statement.
For example, in the hydrolysis of a disaccharide like sucrose into its monosaccharide components (glucose and fructose), water contributes a hydrogen to one monosaccharide and a hydroxyl group to the other, effectively splitting one molecule into two. Therefore, “two molecules are split apart” also correctly describes the result of a hydrolysis reaction.
The other options — “water is formed” and “two molecules are combined” — describe a dehydration synthesis or condensation reaction, which is the reverse of hydrolysis. In those reactions, two molecules are joined together, and a water molecule is produced as a byproduct.
Hydrolysis is a critical reaction in biology and chemistry. In living organisms, it’s essential for digestion: proteins, fats, and carbohydrates are broken down into their monomers (amino acids, fatty acids, and sugars) through hydrolysis, allowing the body to absorb and use them. Enzymes often catalyze these reactions, ensuring they occur efficiently at body temperature.
In conclusion, a hydrolysis reaction results in the splitting of water and the breakdown of a larger molecule into smaller units, making it vital for both chemical and biological processes.
