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The anhydride of acid H(3)PO(4) and HPO(...

The anhydride of acid `H_(3)PO_(4)` and `HPO_(3)` are:

A

`P_(2)O_(5)` and `P_(2)O_(3)`

B

`P_(2)O_(5)`

C

`P_(2)O_(3)`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
B
P in `H_(3)PO_(4), HPO_(3)` and `P_(2)O_(5)` has ox. No . `+5`.
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The sum of bascities of H_(3)PO_(4), H_(3)PO_(3) and H_(3)PO_(2) is

Statement: H_(3)PO_(3) is dibasic and H_(3)PO_(4) s tribasic acid. H_(3)PO_(3) and H_(3)PO_(4) on reacting with D_(2)O gives HD_(2) PO_(3) and D_(3)PO_(4) respectively.

The true statement for the acids of phosphorus. H_(3)PO_(2) H_(3)PO_(3) and H_(3)PO_(4) is:

The K_(a) values for HPO_(4)^(2-) and HSO_(3)^(-) are 4.8xx10^(-13) and 6.3xx10^(8) repectively. Therefore, it follows the HPO_(4)^(2-) is … acid than HSO_(3)^(-) and PO_(4)^(3-) is a …… base than SO_(3)^(2-)

Assertion (A): There is very little difference in acid strength of H_(3)PO_(4), H_(3)PO_(3) ,and H_(3)PO_(2) . Reason (R) : The hydrogens in these acids are not all bonded to oxygens. The electrone-grativities of P and H are almost the same.

P BAHADUR-IONIC EQUILIBRIUM-Exercise3A
  1. The total number of different kind of buffers obtained during the titr...

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  2. Basic lead carbonate is:

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  3. The anhydride of acid H(3)PO(4) and HPO(3) are:

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  4. The decreasing trend of acidic nature of trihalides of boron is:

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  5. The mixed salt among the following is:

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  6. pH of water is 7.0 at 25^(@)C. If water is heated to 70^(@)C, the:

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  7. When HCI gas is passed through a saturated solution of common salt, pu...

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  8. The inerferring radicals interfere in the test of usal inorganic analy...

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  9. Given, HF+H(2)Ooverset(K(a))rarrH(3)O^(+)+F^(-) F^(-)+H(2)Ooverset(K...

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  10. Isoelectric point is defined as the pH at which:

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  11. Which may be added to one litre of water to act a buffer?

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  12. The pH of an acidic buffer mixture is:

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  13. The principal buffer present in human blood is

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  14. The ratio of dissociation constant of two weak acids HA and HB is 4. A...

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  15. The pK(a) of acteylsalicylic acid (aspirin) is 3.5. The pH of gastric ...

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  16. The reverse procees of neutralisation is:

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  17. When different types of salts have nearly same solubility product cons...

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  18. The solubility of AgI in NaI is lowest than that in pure water, becaus...

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  19. Which of the following is most soluble in water ?

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  20. The decreasing order of strength of the bases, OH^(-), NH(2)^(-), H-C-...

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