Final answer:
The reaction between vinegar and baking soda is exothermic. Mixing vinegar and baking soda results in a decrease in pH of the solution.
Step-by-step explanation:
The reaction between vinegar and baking soda is exothermic. In an exothermic reaction, energy is released in the form of heat. When vinegar (acetic acid) reacts with baking soda (sodium bicarbonate), it produces carbon dioxide gas, water, and sodium acetate. The release of energy during this reaction causes the mixture to bubble and fizz.
When vinegar and baking soda are mixed, the pH of the solution decreases. Vinegar is acidic with a pH below 7, while baking soda is a base with a pH above 7. The reaction between the two balances the acidity and alkalinity, resulting in a decrease in pH towards neutrality.
The chemical reaction between vinegar and baking soda is endothermic, absorbing heat and causing the container to feel cool to the touch. It increases the number of gas molecules and raises the pH of the solution.
The reaction between vinegar (acetic acid CH3COOH) and baking soda (sodium bicarbonate NaHCO3) is an endothermic reaction. This is evidenced by the fact that the reaction absorbs heat from its surroundings, which you can feel as a decrease in temperature if you touch the container where the reaction occurs. The energy needed for the reaction to occur is taken from the thermal energy of the surrounding environment, causing it to feel cool to the touch. When vinegar and baking soda mix, a chemical reaction takes place, producing carbon dioxide gas (bubbling and fizzing), water, and sodium acetate. The release of gas increases the number of gas molecules in this reaction. Additionally, the pH of the solution will rise as the acetic acid neutralizes, forming a more basic sodium acetate solution.