Baking soda (sodium bicarbonate, NaHCO?) White vinegar (mainly composed of acetic acid, CH-COOH) and table salt (sodium chloride, NaCl) are three common chemicals in daily life. When they are mixed together, some interesting chemical reactions occur, mainly between baking soda and white vinegar, and salt mainly plays a role in regulating taste or increasing ion concentration in this reaction, with little effect on the main reaction. The reaction between baking soda and white vinegar
Baking soda (NaHCO?) is alkaline, while acetic acid (CH? COOH) in white vinegar is acidic. When the two are mixed, an acid-base neutralization reaction occurs, producing sodium acetate (CH? COONa), water, and carbon dioxide (CO?). This reaction can be represented by the following chemical equation:
\\[ \\text {NaHCO}_3 + \\text {CH}_3 \\text{COOH} \\rightarrow \\text {CH}_3 \\text{COONa} + \\text {H}_2 \\text{O} + \\text {CO}_2 \\uparrow \\]
Carbon dioxide is a gas, so during the reaction process, you will see the mixture bubbling, which is the result of the generated carbon dioxide gas escaping. The function of salt
Salt (NaCl) does not directly participate in the chemical reaction in this reaction, but it can affect the ion concentration and taste of the reaction solution. If you are making a food or cleaning agent that requires these ingredients, salt may be used to adjust the final taste or performance. Application scenarios
-Home cleaning: A mixture of baking soda and white vinegar is often used as a cleaning agent to remove certain stubborn stains and odors. Adding salt can enhance the cleaning effect, especially when dealing with oil stains or stubborn stains.
-Scientific experiment: This reaction is also commonly used in school scientific experiments to demonstrate the processes of acid-base reactions and gas generation.
-Cooking: Although the main focus in this context is on their chemical reactions, baking soda, white vinegar, and salt are also commonly used seasonings in cooking, used for leavening, seasoning, and marinating, respectively. precautions
-When mixing baking soda and white vinegar, pay attention to safety as the generated carbon dioxide may cause an increase in pressure, especially in a closed container.
-When using these substances for cleaning or experimentation, it is recommended to wear appropriate protective equipment such as gloves and goggles.
-If these ingredients are used in cooking, make sure to add them in the correct proportions according to the recipe to avoid affecting the taste and texture of the food.