What happens when baking soda is added to vinegar? Write the word equation for this reaction. (A) Baking soda + Vinegar -> Water + Carbon dioxide (B) Sodium bicarbonate + Vinegar -> Hydrochloric acid + Water (C) Baking powder + Vinegar -> Carbon monoxide + Oxygen (D) Sodium chloride + Vinegar -> Hydrogen gas + Oxygen
The Correct Answer and Explanation is :
When baking soda (sodium bicarbonate) is added to vinegar (acetic acid), a chemical reaction occurs that produces carbon dioxide gas, water, and sodium acetate. The correct word equation for this reaction is:
Baking soda + Vinegar → Water + Carbon dioxide + Sodium acetate.
This reaction can be represented by the following equation:
Sodium bicarbonate + Acetic acid → Water + Carbon dioxide + Sodium acetate.
Now, let’s break down the reasoning and explanation behind this reaction.
Explanation of the Reaction
- Chemical Composition: Baking soda is chemically known as sodium bicarbonate (NaHCO₃), while vinegar primarily contains acetic acid (CH₃COOH). When these two substances combine, they undergo an acid-base reaction.
- Acid-Base Reaction: In this reaction, the acetic acid (the acid) reacts with sodium bicarbonate (the base). This reaction neutralizes the acid and base, leading to the formation of new products.
- Formation of Carbon Dioxide: One of the significant products of this reaction is carbon dioxide (CO₂). This gas is responsible for the fizzing and bubbling that you observe when baking soda is added to vinegar. The generation of gas is a typical indicator of a chemical reaction.
- Reaction Products: The products of the reaction are sodium acetate (CH₃COONa), water (H₂O), and carbon dioxide. The sodium acetate formed can be useful in various applications, including food preservation and as a seasoning.
- Practical Applications: This reaction is commonly used in educational settings to demonstrate chemical reactions and gas production. It’s also utilized in baking, where baking soda serves as a leavening agent. When combined with an acid, such as vinegar, it helps dough rise.
In summary, the reaction between baking soda and vinegar is an example of an acid-base reaction that produces carbon dioxide gas, leading to fizzing and bubbling, and results in water and sodium acetate. The correct answer to the question is (A), as none of the other options accurately represent the reaction that occurs.