Vinegar is 

The correct answer is 5-8% solution of acetic acid in water.

Key PointsVinegar Composition

• Vinegar is a versatile ingredient used in the culinary world, known for its acidic taste and preservative properties.
• It is primarily a 5-8% solution of acetic acid in water, which is produced through the fermentation process.
• The process involves the fermentation of ethanol by acetic acid bacteria, which converts alcohol into acetic acid, giving vinegar its characteristic sour taste and smell.
• Aside from its use in cooking, vinegar is also used for cleaning, medicinal purposes, and as a natural preservative due to its antimicrobial properties.
• The concentration of acetic acid in vinegar can vary depending on the type and purpose, but for culinary uses, it typically ranges from 5% to 8%.

Hence, the correct option is 5-8% solution of acetic acid in water.

Additional Information

• Fermentation Process: The conversion of ethanol to acetic acid is a key step in vinegar production. This biological process is facilitated by Acetobacter, a genus of acetic acid bacteria.
• Types of Vinegar: There are various types of vinegar, including but not limited to, apple cider vinegar, white vinegar, balsamic vinegar, and rice vinegar. Each type has its unique flavor profile and uses in cooking.
• Health Benefits: Vinegar, particularly apple cider vinegar, is often touted for its potential health benefits, including weight loss, improved digestion, and blood sugar regulation. However, scientific evidence supporting these claims is mixed.
• Cleaning and Disinfecting: Due to its acidic nature, vinegar is an effective natural cleaner and disinfectant. It is commonly used in eco-friendly cleaning solutions for its ability to kill bacteria and remove odors.
• Preservation: The antimicrobial properties of vinegar make it an excellent preservative for pickling vegetables, fruits, and other food items, extending their shelf life by inhibiting the growth of bacteria.