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White phosphorus on reaction with lime w...

White phosphorus on reaction with lime water gives calcium salt of an acid `(A)` along with a gas `(X)`. Which of the following is correct ?

A

`(A)` on heating gives `(X)` and `O_2`

B

The bond angle in `(X)` is less than that in case of ammonia.

C

`(A)` is a disbasic acid.

D

`(X)` is more basic than ammonia.

Text Solution

Verified by Experts

The correct Answer is:
B
White phosphorous + Lime water rarr
Calcium salt of an acid `(A) + Gas (X)`
`2 P_4 + 8 Ca(OH)_2 + 6 H_2 O rarr 3 Ca(H_2 PO_2)_2 + 2 PH_3 (X)`
`(A)` is `H_3 PO_2`, hypophosphorous acid.
`(A)` is monobasic acid.
`2 H_3PO_2 overset (Delta) rarr H_3 PO_4 + PH_3`.
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Knowledge Check

  • White phosphorus on reaction with lime water gives calcium salt of an acid(A) along with a gas (X). Which of the following statement is correct for gas (X) ? (I) (A) on heating gives gas (X). (II) (X) is more basic than ammonia. (III) (X) is a poisonous gas and possess smell of rotten fish. (IV) The solution of (X) in water decomposes in presence of light giving red phosphorus and H_(2) Correct code is :

    A
    I,II,III,IV
    B
    I,II,IV
    C
    I,III,IV
    D
    III,IV

  • White phosphorus when reacts with nitric acid gives

    A
    `H_(4)P_(2)O_(6)`
    B
    `H_(3)PO_(2)`
    C
    `H_(3)PO_(4)`
    D
    `H_(3)PO_(3)`

  • One mole of calcium phosphorus on reaction with excess water gives

    A
    `1 mol` of phophine
    B
    `2 mol` of phosphoric acid
    C
    `2 mol` of phosphoric acid
    D
    `1 mol` of phosphoric pentoxide

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