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प्रश्न
Give a chemical test to distinguish between dilute sulphuric acid and conc. sulphuric acid.
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उत्तर
- Dilute sulphuric acid treated with zinc gives hydrogen gas, which burns with a pop sound. Concentrated H2SO4 gives SO2 gas with zinc, and the gas turns acidified potassium dichromate paper green.
- Barium chloride solution gives a white ppt. with dilute H2SO4. This white ppt. is insoluble in all acids. Concentrated H2SO4 and NaCl mixture when heated gives dense white fumes if a glass rod dipped in ammonia solution is brought near it.
संबंधित प्रश्न
Write a balanced chemical equation for the following:
Action of concentrated sulphuric acid on Sulphur.
Name the products formed when hot and concentrated sulphuric acid reacts with Carbon.
How will you distinguish between dilute H2SO4 and conc. H2SO4 ?
Name the catalyst used in the process.
What do you see when concentrated sulphuric acid is added to copper sulphate-5-water ( You are not required to say what is happing, nor is it necessary to name the products.)
Name the gas evolved in following case:
The gas produced by the action of concentrated sulphuric acid on sodium chloride.
What would you observe in the following case:
Sugar crystals are added to a hard glass test tube containing concentrated sulphuric acid.
State one appropriate observation of the following:
Dehydration of concentrated sulphuric acid with sugar crystals.
Hydrogen chloride gas is prepared in the laboratory by the action of concentrated sulphuric acid on sodium chloride.
Give a balanced chemical equation for the above reaction.
What property of Sulphuric acid is exhibited in the following case?
When concentrated Sulphuric acid reacts with Copper to produce Sulphur dioxide gas.
