Q3 of 8 Page 122

Fill half of a beaker of capacity 50 mL with sugar. Add concentrated sulphuric acid so that the sugar is immersed in it. Observe the changes. What are the products formed? Which property of sulphuric acid is revealed here?

Sugar is a carbohydrate, so when we add sugar to sulphuric acid the water from the molecule gets dehydrated and we have only elemental carbon.

C12H22O11 + H2SO4→ 12 C + 11 H2O + mixture water and acid


The reaction is exothermic, much of the water is boiled off as steam.


This called as the charring of sugar.


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4

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Two suggestions were made when there was a leak of ammonia gas.

1. Spray water


2. Spray HCl


Which among this would you choose? Substantiate your answer.

 1

It is often said that the production of sulphuric acid is a bench mark of the industrial development of a country. Prepare a note based on the various uses of sulphuric acid.

 2

Collect more information about the industrial production and uses of strong acids like H2SO4, HCl, and HNO3. Prepare a note and present it in the class.