Calculate the mass and volume of oxygen required to react with 48 grams of sulfur.
January 25, 2021 | education
| Given:
m (S) = 48 g
To find:
m (O2) -?
V (O2) -?
Decision:
S + O2 = SO2, – we solve the problem, relying on the composed reaction equation:
1) Find the amount of sulfur contained in 48 grams of the substance:
n (S) = m: M = 48 g: 32 g / mol = 1.5 mol;
2) We compose a logical expression:
if 1 mole of S requires 1 mole of O2,
then 1.5 mol S will require x mol O2,
then x = 1.5 mol.
3) Find the mass of oxygen required for the reaction to proceed:
m (O2) = n * M = 1.5 mol * 32 g / mol = 48 g;
4) Find the volume of oxygen:
V (O2) = n * Vm = 1.5 mol * 22.4 l / mol = 33.6 l.
Answer: m (O2) = 48 g; V (O2) = 33.6 liters.
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