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Give reason why? Conc. H(2)SO(4) is no...

Give reason why?
Conc. `H_(2)SO_(4)` is not a drying agent for `H_(2)S?`

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Conc. `H_2SO_4` is an oxidising agent and oxidises `H_2 S` to sulfur.
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ICSE-P-BLOCK ELEMENTS-EXERCISE (PART-II)(DESCRIPTIVE QUESTIONS)(VERY SHORT ANSWER QUESTIONS)
  1. What is oleum ? What is the oxidation state of sulfur in it?

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  2. What property of conc. H2SO4 is made use of in each of the following c...

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  3. Give reason why? Conc. H(2)SO(4) is not a drying agent for H(2)S?

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  4. What happens when ozone reacts with KI solution?

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  5. Why a black suspension of lead (II) sulfide in water turns white when ...

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  6. What happens when ozone and hydrogen peroxide are allowed to react wit...

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  7. What is tailing of mercury ?

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  8. What is ozonolysis ?

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  9. Why is O-O bond length in ozone (128 pm) more than in O2 (122 pm)?

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  10. Why ozone is used in improving the atmosphere of crowded places such a...

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  11. Write balanced chemical equations for the preparation of SO2 from a s...

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  12. Why quicklime is not used for drying SO2?

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  13. What is produced when SO2 is dissolved in water?

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  14. Name one substance which can be used as a catalyst in the formation of...

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  15. Write one chemical equation to show that SO2 acts as a reducing agent...

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  16. What happens when SO2 reacts with Cl2 : (i) in presence of sunlight....

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  17. SO2 acts as a bleaching agent. How?

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  18. Dry SO(2) does not bleach dry flowers because

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  19. Why does SO2 exhibit bleaching action only in presence of water?

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  20. What happens when H2S reacts with SO2 ?

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