Question

A mixture of 117.9 g of P and 121.8 g of O, reacts completely to form P4O6 and P4O10. Find the masses of P4O6 and P4O10

that are formed by the reaction.
What is the mass of P4O6?
mass of P4O10?

Answer 1

Mass of P4O6=103.4

P4O10=133.48

Step-by-step explanation:

Balanced reaction is:

8P +8
`O_(2)` ⇒
`P_(4) O_(6)` +
`P_(4) O_(10)`

Both reactant completely vanishes as equivalent of bot are equal.

Moles of P=
`(117.9)/(31)` =3.80

Moles of
`O_(2)` =
`(117.9)/(31)` =3.80

No. of moles of formed product are equal and is
`(1)/(8)`th of mole of any of reactant.

Thus weight of
`P_(4) O_(6)` =
`(3.80)/(8)`×220 ≈103.41

weight of
`P_(4) O_(10)` =
`(3.80)/(8)`×284 ≈133.48