Acids are substances with pH below 7 that taste sour and conduct electricity in water. They are present in everyday items like lemon juice, vinegar, s
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Why does lemon juice prevent browning of cut fruits and vegetables?
Browning results from oxidation of compounds in fruits and vegetables. The acidic environment of lemon juice (pH ~2) slows oxidation. Additionally, vitamin C in lemon juice is an antioxidant that prevents the browning reaction by reacting with oxygen first.
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Is all vinegar the same, or do different types have different acidity?
Different vinegars have varying acetic acid content. Distilled white vinegar is about 5 percent acetic acid. Apple cider vinegar is similar. Balsamic vinegar from Italy may be less acidic but has complex flavors. The acidity affects preservation strength and flavor profile.
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How do antacids work to relieve stomach acidity?
Antacids contain bases like calcium carbonate or aluminum hydroxide that neutralize excess stomach acid through acid-base reaction. This raises pH of stomach contents, reducing irritation. They do not reduce acid production, only neutralize existing acid temporarily.
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