# Question #f3fca

##### 1 Answer

The required volume of oxygen, at STP, is 12.323 Liters.

#### Explanation:

The balanced reaction takes the following form:

4Fe(s) + 3O2(g) = 2Fe2O3(s) .................... (1)

It is well known that, for all the materials, the number of moles is

determined by the following equation:

Thus,

OR Number of Fe moles = 0.734 mole

According to the form in equation (1), the number of moles of required Oxygen = (3/4)(0.734) = 0.5505 mole

For ideal gases, the general equation is given by the following form:

PV = nRT Thus, we have:

OR V of O2= (0.5505 mole)(0.082 Lit.atm/mole.oK)(273 oK)/(1 atm)

V of O2(g) = 12.323 Liters at STP

With kind regards

Dr. Mamdouh Younes