pBlock ElementsII - Result Question 134

####19. The reaction of $P _4$ with $X$ leads selectively to $P _4 O _6$. The $X$, is (a) dry $O _2$

(2009)

(b) a mixture of $O _2$ and $N _2$

(c) moist $O _2$

(d) $O _2$ in the presence of aqueous $NaOH$

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Solution:

  1. In limited supply of oxygen, phosphorus is oxidised to its lower oxide $P _4 O _6$ while excess of oxygen gives $P _4 O _{10}$. A mixture of $O _2$ and $N _2$ is used for controlled oxidation of phosphorus into $P _4 O _6$.


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