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 :
The correct answer is: Two molecules are split apart.
Explanation:
A hydrolysis reaction is a chemical reaction that involves the breakdown of a compound by water. Specifically, in a hydrolysis reaction, water is used to break a bond in a molecule, resulting in the separation of that molecule into two smaller molecules.
The term “hydrolysis” comes from the Greek words “hydro” (meaning water) and “lysis” (meaning splitting). This reaction occurs when water is added to a compound, breaking a specific bond, often in a larger molecule, and resulting in the formation of two smaller components.
For example, in the hydrolysis of a disaccharide like sucrose (table sugar), the molecule is split into its two monosaccharide components, glucose, and fructose, through the addition of water:
[
\text{Sucrose} + \text{H}_2\text{O} \rightarrow \text{Glucose} + \text{Fructose}
]
Here’s a breakdown of the possible choices:
- Water is split apart: This is incorrect. Hydrolysis uses water to break a bond, not to split it.
- Two molecules are split apart: This is correct. In hydrolysis, a molecule (or sometimes a polymer) is broken down into two smaller molecules as a result of adding water.
- Water is formed: This is incorrect. Water is not a product of hydrolysis. In fact, water is consumed in the reaction, not produced.
- Two molecules are combined: This is incorrect. This describes a condensation or dehydration reaction, not hydrolysis. In a condensation reaction, two smaller molecules combine to form a larger one, with the elimination of a water molecule.
In summary, hydrolysis reactions are essential in many biological processes, such as digestion, where complex molecules like proteins, fats, and carbohydrates are broken down into their smaller, more digestible components through the addition of water.