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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.
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संबंधित प्रश्न
Write a balanced chemical equation for the following:
Action of concentrated sulphuric acid on Sulphur.
State one relevant observation for given reactions:
Action of concentrated Sulphuric acid on hydrated copper sulfate
Give balanced chemical equations for the action of sulphuric acid on the following:
Potassium hydrogen carbonate.
Which property of sulphuric acid is shown by the reaction of the concentrated sulphuric acid with carbon?
What would you see, when a crystal of CuSO4.5H2O is placed in concentrated sulphuric acid? Give reason to explain your observation.
Give a balanced chemical equation for the action of sulphuric acid on the following:
Potassium hydrogen carbonate
Write balanced chemical equation to show :
The oxidizing action of conc.sulphuric acid on carbon
Write balanced chemical equation to show :
The behavior of H2SO4 as an acid when it reacts with magnesium.
Write the balanced chemical equation for the following conversion:
Ammonium sulphate from ammonia and dilute sulphuric acid.
Give balanced chemical equation to prepare the following salt:
Sodium sulphate using dilute sulphuric acid
