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When orthophosphoric acid is heated at 2...

When orthophosphoric acid is heated at `240^@ C`, the main product formed is.

A

`H_3 PO_3`

B

`H_3 PO_2`

C

`HPO_3`

D

`H_4 P_2 O_7`

Text Solution

Verified by Experts

The correct Answer is:
D
`2 H_3 PO_4 overset (240^@ C)rarr H_4 P_2 O_7 + H_2 O`.
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CENGAGE CHEMISTRY ENGLISH-P-BLOCK GROUP 15 ELEMENTS - THE NITROGEN FAMILY-Exercises (Single Correct)
  1. Phosphorus is used in

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  2. When phosphine is bubbled through a solution of silver nitrate is pre...

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  3. When orthophosphoric acid is heated at 240^@ C, the main product forme...

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  4. Complete manure is that which supplies

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  5. Industrial preparation of nitric acid by Ostwald's process involves.

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  6. When treated with nitric acid which of the following liberates hydroge...

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  7. concentrared nitric acid oxidises cane sugar to

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  8. White phophorus reacts with caustic soda, the products are PH(3) and ...

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  9. White phosphorus may be removed from red phosphorus by

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  10. Which one of the acids is a dibasic acid ?

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  11. Which one of the following can be used as an anaesthetic?

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  12. The catalyst used in the manufacture of ammonia by Haber process is

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  13. The catalyst used in the manufacture of NO by Ostwald's process is

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  14. Which of the following properties of white phosphorus are shared by re...

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  15. The number of P-O-P bridges in the structure of phosphorus pentoxide a...

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  16. Nitrogen molecule is chemically less active because of its

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  17. Addition of conc. HNO3 to conc. H2 SO4 gives

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  18. The reaction between NH2^(Ө) and N2 O gives

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  19. Red phosphorus is less reactive than yellow phosphorus because

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  20. Aqua regia is a mixture of

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