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2.79 g of an organic compound when heate...

2.79 g of an organic compound when heated in Carius tube with cone. `HNO_3 " and "H_3PO_4` formed converted into `MgNH_4.PO_4` ppt. The ppt. on heating gave 1.332 g of `Mg_2P_2O_7`.The percentage of P in the compound is

A

23.33

B

13.33

C

33.33

D

26.66

Text Solution

Verified by Experts

The correct Answer is:
B
`% of P = (62 xx 1.332 xx 100)/(222xx2.79)=13.33`
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MARVEL PUBLICATION-BASIC PRINCIPLES AND TECHNIQUES IN ORGANIC CHEMISTRY-Test your grasp
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