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Acids, Bases and Salts — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7ScienceAcids, Bases and Salts5 Marks
Question
Describe the process of neutralisation with the help of an example.
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Answer

The reaction between an acid and a base is known as neutralization reaction. In this reaction, both acid and base cancel each other’s effect. Neutralisation reaction results in the formation of salt and water. During this reaction, energy in the form of heat is evolved. $\text{Acid}+\text{Base}\xrightarrow{\ \ \ \ \ \ \ \ }\text{Salt}+\text{Water}+\text{Heat}$ For example: When sodium hydroxide $(\mathrm{NaOH})$ is added to hydrochloric acid $(\mathrm{HCl})$, sodium chloride $(\mathrm{NaCl})$ and water $\left(\mathrm{H}_2 \mathrm{O}\right)$ are obtained. $\text{NaOH}\ \ \ \ +\ \ \ \ \text{HCl}\ \ \ \ \ \xrightarrow{\ \ \ \ \ \ \ \ \ \ }\ \ \ \ \ \text{NaCl}\ \ \ \ +\ \ \ \ \text{H}_2\text{O}\ \ \ +\ \ \ \text{Heat}\\ \ ^\text{Sodium}\ \ \ \ \ \ \ \ \ \ ^\text{Hydrochloric}\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ^\text{ Sodium}\ \ \ \ \ \ \ \ \ \ \ \ ^\text{Water}\\ ^\text{hydroxide}\ \ \ \ \ \ \ \ \ ^\text{acid}\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ^\text{chloride}$

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