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For H(2)PO(3) and H(3)PO(4) the correct ...

For `H_(2)PO_(3)` and `H_(3)PO_(4)` the correct choice is :

A

`H_(3)PO_(3)` "is dibasic and reducuing"

B

`H_(3)PO_(3)` "is dibasic and non- reducing"

C

`H_(3)PO_(4)` "is tribiasic and reducing"

D

`H_(3)PO_(3)` "is tribasic and non- reducing"

Text Solution

Verified by Experts

The correct Answer is:
A
In `H_(3)PO_(3)`,there are two `OH^(-)` groups i.e. there are two ionisable protons. So it is diabasic in nature. The hydrogen which is directly attached to phosphorous atom is called as reducing hydrogen. `As H_(3)PO_(3)` contains one P-H bond it acts as a reducing agent.
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RESONANCE-P BLOCK ELEMENTS-ALP PART 1 OBJECTIVE
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  2. Polyphosphates are used for softening agents because they

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  3. For H(2)PO(3) and H(3)PO(4) the correct choice is :

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  4. (NH(4))(2)Cr(2)O(7) on heating gives a gas which is also given by :

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  5. A pale bule liquid is obtained by equuimolar mixture of two gases at -...

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  6. Thermodynamically most stable allotrope of phosphorus is :

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  7. There are some deposits of nitrated and phosphates in the earth's crus...

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  8. There are some deposits of nitrated and phosphates in the earth's crus...

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  9. There are some deposits of nitrates and phosphates in the earth's crus...

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  10. The reaction of P(4) with X leads selectively to P(4)O(6) The X is :

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  11. Match each of the reaction given in Column I with the corresponding pr...

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  12. Extra pure N2 can be obtained by heating

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  13. Which ordering of compounds is according to the decreasing order of th...

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  14. Amongest H(2)O,H(2)S,H(2)Se and H(2) Te the one with highest boiling ...

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  15. The number of S-S bonds, in sulpher trioxide trimer (S(3)O(9)) is :

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  16. Which of the following oxoacids of sulpher has -O-O- linkage ?

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  17. Which of the following will not be oxidised by O(3)?

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  18. Which gas is evolved when PbO(2) is treated with conc HNO(3) ?

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  19. Aqueous solution of Na(2)S(2)O(3) on reaction with CI(2), gives

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  20. Assign a reason for each of the following : (I) SCl(6) is not known ...

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