pBlock ElementsII - Result Question 134

####19. The reaction of P4 with X leads selectively to P4O6. The X, is (a) dry O2

(2009)

(b) a mixture of O2 and N2

(c) moist O2

(d) O2 in the presence of aqueous NaOH

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Solution:

  1. In limited supply of oxygen, phosphorus is oxidised to its lower oxide P4O6 while excess of oxygen gives P4O10. A mixture of O2 and N2 is used for controlled oxidation of phosphorus into P4O6.


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