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Question
Why should curd and sour substances not be kept in brass and copper vessels?Why should water be never added dropwise to concentrated sulphuric acid? [3 MARKS]
Why should curd and sour substances not be kept in brass and copper vessels?Why should water be never added dropwise to concentrated sulphuric acid? [3 MARKS]
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Solution
Each point: 1 Mark
1. Curd and sour substances contain acids.
2. They would react with the surface of metal vessels such as that of brass and copper to produce harmful substances.
3. While diluting an acid, water should not be added dropwise to a concentrated acid because the heat generated may cause the mixture to splash out.
Each point: 1 Mark
1. Curd and sour substances contain acids.
2. They would react with the surface of metal vessels such as that of brass and copper to produce harmful substances.
3. While diluting an acid, water should not be added dropwise to a concentrated acid because the heat generated may cause the mixture to splash out.
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