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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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