Equal weights of phosphorusand oxygenare heated in a closed vessel producing P_(2)O_(3) and P_(2)O_(5) in a 1 : 1mole ratio. Ifthe limitingcomponent is exhausted, findwhichcomponentand alsowhatfraction of it is left over.

Equal weights of phosphorusand oxygenare heated in a closed vessel pro

1.	Equal weights of phosphorusand oxygenare heated in a closed vessel producing P_(2)O_(3) and P_(2)O_(5) in a 1 : 1mole ratio. Ifthe limitingcomponent is exhausted, findwhichcomponentand alsowhatfraction of it is left over.
Answer» Solution :As1 mole each of `P_(2) O_(3) and P_(2) O_(5)` is formed, the mole ratio of thereacting P and O ATOMSIS 4 : 8 or 1 : 2 As the givenweights of phosphorus and oxygen are same, say w g,their MOLES of ATOMS are `(omega)/(31) and (omega)/(16)` respectively. `:.` 2 moles of O combine WITH1 mole of P. `:. (omega)/(16)` moles of O combine with `(omega)/( 32)`moles of P. Sophosphorous is left over and moles of Premaining `= (omega)/( 31) - (omega)/( 32)` `:.`fractionof P left over`=(((omega)/(31)-(omega)/(32)))/((omega)/(31))= (1)/(32)or 3 . 125 %`