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H3 PO3, phosphorus acid is...

`H_3 PO_3`, phosphorus acid is

A

a diprotic acid

B

a triprotic acid

C

a monoprotic acid

D

not acidic

Text Solution

Verified by Experts

The correct Answer is:
A
`H_(3)PO_(3)` is a diprotic acid as it give only two `H^(+)` ions on dissociation.
`{:(" O"),(" ||"),(" P"),(" / | \"),(" HO OH H"):}`
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DINESH PUBLICATION-THE NITROGEN FAMILY-Revision question
  1. Nitrogen shows different oxidation states in the range:

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  2. An example of a natural oxide is

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  3. H3 PO3, phosphorus acid is

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  4. N2 forms NCl3 whereas P can form both PCl3 and PCl5. Why ?

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  5. Which of the following is the correct order of increasing enthalpy of ...

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  6. In the reaction P4 + 3 KOH + 3H2 O to PH3 + 3KH2 PO2

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  7. The reaction of calcined phosphate rock with coke and sand in an elect...

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  8. Which of the following is not correct?

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

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  10. The number of P-O-P bridge in the structure of phosphorous pentoxide a...

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  11. Which of the following is not hydrolysed

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  12. Which statement is wrong for NO?

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  13. Which of the following metal Fe, Zn, Pb, Ag and Pt do not give a metal...

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  14. Which of the following oxides of nitrogen is thermally most stable

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  15. Correct formula of the complex formed in the brown ring test for nitra...

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  16. The decreasing order of the boiling points of the following hydrides ...

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  17. The gases produced in the reaction Pb (NO3)2 overset(Delta) to and N...

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  18. Nitrogen forms a variety of compounds in all oxidation states ranging ...

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  19. Which of the following form acidic halides

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  20. Chlorine reacts with excess of ammonia to form.

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