Q. 84.1( 118 Votes )
Determine the mol
Percentage of Iron in the oxide = 69.9%
Percentage of oxygen in the oxide = 30.1%
Finding Empirical Formula:
To determine the empirical formula of iron oxide, we need to find the simplest whole number ratio.
Therefore, the empirical formula for iron oxide is Fe2O3.
Finding Molecular Formula:
Empirical Formula Mass = [55.84×2] + [16×3]
= 111.68 + 48
Molecular Mass [given] = 159.69g
n = [Molecular Mass]/ [Empirical Formula Mass]
Molecular Formula = n × Empirical Formula
= 1 × Fe2O3.
Therefore, the Molecular Formula is Fe2O3.
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