Neutralization — প্রশমন বিক্রিয়া

Definition

Neutralization is the reaction in which an acid and a base cancel each other: H⁺ from the acid joins OH⁻ from the base to give water, and the leftover ions form a salt. The general equation is acid + base → salt + water. Strong acid with strong base gives a neutral solution, pH 7; if strengths differ, the final solution ends slightly acidic or basic. Farmers use neutralization by adding lime to acidic soil.

For example

When your stomach burns from extra acid, an antacid tablet containing magnesium hydroxide neutralizes the excess $\mathrm{HCl}$: $\mathrm{Mg(OH)_{2}}$ + $\mathrm{2\,HCl}$ → $\mathrm{MgCl_{2}}$ + $\mathrm{2\,H_{2}O}$.

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