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In Carius, method, phosphorous present i...

In Carius, method, phosphorous present in an organic compound is quantitatively precipitated as
(i) `MgNH_(4)PO_(4)`
(ii) `Mg_(2)P_(2)O_(7)`
(iii) `(NH_(4))_(2)MoO_(4)`
(iv) `(NH_(4))_(3)PO_(4).12MoO_(3)`

A

(i), (iii)

B

(ii), (iv)

C

(i), (ii)

D

(iii), (iv)

Text Solution

Verified by Experts

The correct Answer is:
B
In Carius' method, `P` present in an organic compound is first oxidized to phosphoric acid which is quantitatively precipetated either as ammonium phosphomolybdate or as magnesium pyrophosphate.
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