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Answer:
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Explanation:
1. i.e, it acts as a dehydrating agent. When added slowly to CuSO4 . 5H2O crystal, the crystalline water is observed and as a result, the copper sulfate turns white amorphous anhydrous powder. Hope the answer is .When concentrated sulfuric acid is added to hydrated copper sulfate it demonstrates the property of dehydration. The blue crystals is changed to white powder as water is removed.
2.If water is added to a concentrated acid, the heat generated may cause the mixture to splash out and cause burns. When the acid is added to water slowly with constant stirring, the mixture will not splash out.
3.Answer: The reaction between lead nitrate (Pb(NO3)2 and sulfuric acid H2SO4 is an exchange reaction followed by a precipitate forming: Pb(NO3)2 + H2SO4 --------> PbSO4↓ + 2HNO3. Lead sulfate is a white precipitate formed as a result of the reaction.
4.Sulphuric acid is diprotic acid i.e. its one molecule can donate 2 ions. Monosubstituted salt is called metal bisulphate or metal hydrogen sulphate. Disubstituted salt is called metal sulphate. ... Thus alkali metals give 2 kind of salts with .
5.Copper does not react with dilute sulphuric acid. So, no reaction takes place when dilute sulphuric acid is poured on a copper plate. But when concentrated sulphuric acid is poured over copper plate, effervescence is observed. This happens because of formation of hydrogen gas.