what do you observe when a dry blue litmus paper is dipped in a concentrated sulphuric acid justify your answer
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Answer:
When a blue litmus paper is dipped in dilute HCl acid, its color changes to red.
Blue litmus turns red when it is dipped in acid.
Explanation:
Concentrated sulfuric acid has a very strong affinity for water, forming various hydrates, such as H2SO4∙4H2O . (A hydrate is a binding between a compound and one or more water molecules.) The reaction produces heat. Carbohydrates such as sugar and paper (mostly cellulose) are combinations of carbon and water, and sulfuric acid pulls out the water, leaving carbon behind.
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When a dry blue litmus paper is dipped in a concentrated sulphuric acid then the colour will change to red.
- Concentrated sulphuric acid is a strong acid, which means it strongly dissociates into its constituent ions namely hydrogen ions and sulphate ions.
- These hydrogen ions react with blue litmus paper turning it red.
- The litmus test is an indicator of the acidity or basicity of a solution.
- The blue litmus changes to red on contact with an acidic solution while red litmus changes to blue on contact with a basic solution.
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