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In the prepartion of HBr or HI, NaX (X=B...

In the prepartion of `HBr` or `HI, NaX (X=Br,I)` is treated with `H_(3)PO_(4)` and not by concentrated `H_(2)SO_(4)` since,

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Since `H_(2)SO_(4)` is an oxidising agent it oxidised it oxidies HBr & HI to `Br_(2)` and `I_(2)` respectively.
`2HBr + H_(2)SO_(4) to Br_(2)+SO_(2)+2H_(2)O`
Hence `NaBr+H_(3)PO_(4)toNaH_(2)PO_(4)+3HBr`
Another process `PBr_(3)+3H_(2)OtoH_(3)PO_(4)+3HBr`
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MOTION-P-BLOCK ELEMENTS-Exercise - 4 | Level-I Previous Year | JEE Main
  1. In the prepartion of HBr or HI, NaX (X=Br,I) is treated with H(3)PO(...

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  2. The number of hydrogen atom(s) attached to phosphorus atom in hypophos...

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  3. What products are expected from the desproprtionation reactin of hypoc...

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  4. Which one of the following statements regarding helium is incorrect?

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  5. Which one of the following reaction of xenon compounds is not Feasible...

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  6. In which of the following arrangements, the sequence is not strictly a...

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  7. Identify the incorrect statement from the following

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  8. The number and type of bonds between two carbon atoms in calcium carbi...

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  9. The gas leaked from a storage tank of the Union Carbide plant in Bhopa...

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  10. Which of the following is the wrong statement?

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  11. Statement I Nitrogen and oxygen are the main components in the atmosph...

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  12. From the following statements regarding H(2)O(2), choose the incorrect...

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  13. The product obtained when chlorine gas reacts with cold and dilute aqu...

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  14. When metal ‘M’ is treated with NaOH, a white gelatinous precipitate ‘X...

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  15. Which phosphorus is thermodynamically most stable?

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  16. When two gases are mixed at -30^(@)C the blue coloured gas is formed:

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  17. The noble gases have closed-shell electronic configuration and are mon...

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  18. The noble gases have closed-shell electronic cordigaration and are mon...

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  19. The noble gases have closed-shell electronic configuration and are mon...

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  20. There are some deposits of nitrates and phosphates in earth's crust. N...

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  21. There are some deposits of nitrates and phosphate in earth's crust. Ni...

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