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

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

A

`H_(3)PO_(3)` is dibasic and reducing

B

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

C

`H_(3)PO_(4)` is tribasic and reducing

D

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

Text Solution

Verified by Experts

The correct Answer is:
A
`H-O-overset(H)overset(|)underset(O)underset(darr)P-OH`, Hence it is dibasic. It acts as reducing agent also.
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H_(3) PO_(3) = H_(3) PO_(4) + PH_(3)

How is the reduction ability of H_(3)PO_(2) and H_(3)PO_(3) accounted on the basis of structures of molecules

Knowledge Check

  • 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"

  • For H_(3)PO_(3) and H_(3)PO_(4) correct choice is

    A
    `H_(3)PO_(3)` is diabasic and reducing agent.
    B
    `H_(3)PO_(3)` is diabasic and non - reducing agent.
    C
    `H_(3)PO_(4)` is tribasic and reduing agent.
    D
    `H_(3)PO_(4)` is dibasic and non - redcuing agent.

  • H_(3)PO_(3) is

    A
    A tribasic
    B
    A dibasic
    C
    A monobasic
    D
    Neutral

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    We have a 0.1M solution of NH_(2)CONH_(2),H_(3)PO_(3) and H_(3)PO_(4) then which of the following statement is correct, if we consider 100% dissociation for H_(3)PO_(3) and H_(3)PO_(4)

    Statement-1 : Both H_(3)PO_(3) and H_(3)PO_(4) have the same number of hydrogen atoms but H_(3)PO_(4) is a tribasic acid and H_(3)PO_(3) is a dibasic acid. Statement-2 : 1 mol of H_(3)PO_(3) is neutralised by 2 mol of NaOH while 1 mol of H_(3)PO_(4) is neutralised by 3 mol of NaOH

    Asseration: H_(3)PO_(4) and f H_(3)PO_(3) both are present in fertilizers. Reason: H_(3)PO_(3) increases the solubility of fertilizers.

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