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Is the distilled water acidic/basic/neutral? How would you verify it?
Describe the process of neutralisation with the help of an example.
Answers
Q 4. Is the distilled water acidic/basic/neutral? How would you verify it?
SOLUTION:
Distilled water is neutral in nature. To verify it, take a small amount of distilled water in two test tubes. Add blue litmus paper to one test tube and red litmus paper to the other test tube. It is observed that there is no change in colour of either blue or red litmus paper which shows distilled water is neither acidic nor basic, hence neutral.
Q 5. Describe the process of neutralisation with the help of an example.
SOLUTION:
Neutralisation is a process in which an acid reacts with a base to produce salt and water. Take some dilute hydrochloric acid in a test tube and add 2-3 drops of phenolphthalein. The solution will remain colourless. Add to this acidic solution, sodium hydroxide solution with the help of a dropper and shake the test tube after adding each drop. The pink colour which appears keeps disappearing on shaking. Stop adding sodium hydroxide drop when the pink colour does not disappear. This is the point where neutralisation reaction has taken place. After this, if you keep on adding sodium hydroxide the solution will remain pink since it is basic in nature.
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Explanation:
it is always nuetral and not the other