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Q: What were the test results of the lemon juice and baking soda mixture? How do you explain these results? How do acids and bases help living organisms?
A: When baking soda and lemon juice are added together, a chemical reaction occurs. [ The reaction of the two is an acid-based reaction because it involves an acid (citric acid in the lemon juice) reacting with a base (sodium bicarbonate, more commonly known as baking soda). We can write this reaction as follows: C6H8O7 + 3NaHCO3 Na3C6H5O7 + 3H2CO3 In other words, a molecule of citric acid
reacts with three molecules of sodium bicarbonate to form a molecule of sodium citrate and three molecules of carbonic acid. Although an acid is reacting with a base, this is not a neutralization reaction. In a neutralization reaction, the products are water and salt; lemon juice is a weaker acid and baking soda is an organic salt. If you were to measure the pH of a solution containing the products, it would be lower than 7 (acidic). **Aside from their important functions in human physiology, acids and bases are all around us. Lemon juice, which can be used as a cleansing agent and antiseptic, and household vinegar, which has a myriad of uses, are acids, while baking soda is a base. ]
Expert answered|emdjay23|Points 1386|
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Asked 5/15/2013 1:05:19 PM
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