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The reaction between an acid and a base give a salt and water is known as neutralization reaction. In general, a neutralization reaction can be written as
Base + Acid --------> Salt + Water
example: `NaOH + HCl ---gt NaCl + H_2 O`
If a strong acid and strong base react it gives salt of neutral nature.
If strong acid and week base react then the formed salt is acidic
similarly strong base and a week acid react the salt is basic in nature.
The uses of neutralization reaction
1. Tooth decay or cavities
Chocolates and decaying food particles produce acid in our mouth which reacts with enamel i.e. calcium phosphate and leads to cavities. Using toothpaste while brushing help to neutralize the acid since toothpaste is a base.
2. Gastric patients
Anti-acids or antacids are medicines containing bases such as `NaHCO_3 ` (sodium bicarbonate) `Mg(OH)_2` (magnesium hydroxide) neutralize excess of acid in stomach.
3. To treat acidic soils
Plants do not grow well in acidic soils. Bases like `CaO` , `CaCO_3` , ashes of burnt wood are added to the soil to neutralize its acidity.
Similarly basic soils are treated with acids to neutralize its basic nature.
4. To treat wasp-stings
Wasp stings are basic in nature. Vinegar which is acetic acid, is used to cure wasp-stings as it neutralizes the stings.
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