The charge of iron in the compound is 2+ and the compound is iron (II) chloride which can be represented using the chemical formula FeCl₂.
FURTHER EXPLANATION
To answer this problem, some key facts to recall are:
- In the chemical formula of ionic compounds, the charge of the metal becomes the subscript of the nonmetal and the charge of the nonmetal is used as the subscript of the metal.
- The molar mass is the mass of one mole of a substance. This is equal to the combined masses of the elements that make up the chemical compound.
In this question, the metal is iron (Fe) with its charge unknown so it can be denoted as Feˣ⁺, and the nonmetal is chlorine (Cl) which is known to have a charge of 1-. By crisscross method, the chemical formula of the compound may be written as FeClₙ.
Since the molar mass of the compound is given, the subscript n, may be determined by getting the sum of the masses of the elements that make up the substance:
molar mass of FeClₙ.= molar mass of Fe + n{molar mass of Cl}
126.8 g/mol = 55.845 g/mol + n(35.45 g/mol)
n = 2.00
The charge, therefore, of iron in the compound is 2+. The chemical formula of iron (II) chloride is written as FeCl₂.
LEARN MORE
- Learn more about Empirical Formula brainly.com/question/8516072
- Learn more about Naming Compounds brainly.com/question/8968140
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<em>Keywords: molar mass, compound, chemical formula, ionic compound</em>
