Question

Neutralisation reaction is a chemical change. Justify this statement with the
help of an example.
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Answer 1

First off, Neutralisation reaction is a reaction between an acid and a base to form salt and water.

i.e., Acid + Base ---> Salt + Water

eg:- HCl + NaOH ---> NaCl + H20

Now, we can say that neutralisation reaction is definitely a chemical change. Why? Because:-

• Change in the chemical composition. This change is beyond a physical change. There are changes that are happening to chemical components in the reaction.
• New substances are formed. Refer the above example. You can see that the products (NaCl, H20) are entirely different from the reactants (HCl, NaOH). Generally such new products are formed in a chemical change.
• Increase in temperature. A Neutralisation reaction is highly exothermic, which means that Heat energy is released during the reaction process. You can experience this yourself by touching the beaker in which you have done this experiment.
• It's Irreversible! A typical neutralisation reaction can't be reversed. You cannot convert the Salt and Water to their reactants, I.e, Acid & Base. Since, this reaction cannot be reversed naturally, we can confidently say that it's a chemical change.

So, we can conclude that neutralisation reaction is a chemical change. :)

Answer 2

Answer:

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Explanation:

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