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Explain Acid.
Acid- The substances that taste sour are called acid and their nature is acidic.
1. The term acid is derived from a Latin word acere which means sour.
2. An acid is a molecule or ion capable of donating a proton, or, alternatively, capable of forming a covalent bond with an electron pair.
3. Acid turns blue litmus paper to red, and its pH is below 7.0 (on a 14-point scale).
4. Acids do not give colour with phenolphthalein indicator and do not absorb carbon dioxide gas. Also, acids do not react with an ammonium salt.
5. Natural Acids are the acids that occur in nature, such as, acids present in fruits.
6. Acids are generally found in Vinegar, Curd, Spinach, Lemons, Amla, Tamarind, Grapes, Unripe Mangoes, Citrus fruits such as oranges, etc.
7. Acids react with Bases to give Salt and Water. Acid + Base --> Salt + Water
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