What occurs during a dehydration synthesis reaction?

• A. A $H_{2}O$ molecule is removed to form a new bond between two molecules.
• B. A $H_2$ molecule is removed to break a bond between two molecules.
• C. An $O2$ molecule is added to form a new bond between two molecules.
• D. A $H_{2}O$ molecule is added to break a bond between two molecules.

Answer: (A)

Verified step by step guidance

1. Understand the concept of dehydration synthesis: It is a type of chemical reaction where two molecules are joined together with the removal of a water molecule.
2. Identify the components involved in dehydration synthesis: Typically, this involves the removal of a hydroxyl group (OH) from one molecule and a hydrogen atom (H) from another, resulting in the formation of water (H₂O).
3. Recognize the role of dehydration synthesis in organic chemistry: This reaction is crucial in forming larger molecules, such as polymers, from smaller monomers.
4. Analyze the options given in the problem: Determine which option correctly describes the removal of a water molecule to form a new bond between two molecules.
5. Conclude that the correct description of a dehydration synthesis reaction is the removal of a water molecule to form a new bond between two molecules, as this aligns with the definition and process of dehydration synthesis.