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What happens when : (i) Red phosphorus...

What happens when :
(i) Red phosphorus is treated with `I_(2)` and water.
(ii) Give balance equation : Cu reacts with `HNO_(3)` to produce
NO and `NO_(2)` in the ratio`2:1`.

Text Solution

Verified by Experts

The correct Answer is:
(i) `2P+3I_(2)+6H_(2) to 2H_(3)PO_(3)+6HI`
(ii) `7Cu+20HNO_(3)` to `7Cu(NO_(3))_(2)+4NO+2NO_(2)+10H_(2)O`
NA
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RESONANCE ENGLISH-P BLOCK ELEMENTS-ALP PART 1 Comprehension # 1 SUBJECTIVE
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  2. (a) Nitric oxide turns brown in air. Why ? (b) Copper dissolves in H...

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  4. In P4 O10, the number of oxygen atoms bonded to each phosphorus atom i...

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  5. Write the names of substances which have higher oxidation potential th...

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  6. Why sulphur is able to show oxidation state of +4 and +6 with fluroine...

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  7. Oxygen exists as a gas, while sulphur exists as a solid Why ?

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  8. How is the presence of SO2 detected?

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  9. Which aerosols deplete ozone?

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  11. An aqueous solution of a gas (X) gives the following reactions : (a)...

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  13. {:(,underset(("Oxy acids of phosphoros"))("Column I"),,underset(("Char...

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  14. {:("Column I","Column II"),((A)PbO(2)+HNO(3)to,(p)"One of the products...

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  15. {:("Column I","Column II"),((A)2NO(2)overset("Cool")to,(p)"One of the ...

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  16. P(4) reduces copper sulphate solution to metallic copper. True or Fa...

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  17. Red phosphorus catches fire at room temperature. True or False

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  18. If 200mL of 0.1M urea solution is mixed with 400mL of 0.2M glucose sol...

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  19. N(2)O does not from hyponitrite with alkali. State True or False .

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  20. In alkaline solution, with Devarda's alloy (Cu//Al//Zn) nitrites are r...

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