Magnesium (used in the manufacture of light alloys) reacts with iron(III) chloride to form magnesium chloride and iron.
3Mg( s) + 2FeCl3( s) → 3MgCl2( s) + 2Fe( s)
A mixture of 41.0 g of magnesium ( molar mass = 24.31 g/mol) and 175 g of iron(III) chloride ( molar mass = 162.2 g/mol) is allowed to react. Identify the limiting reactant and determine the mass of the excess reactant present in the vessel when the reaction is complete.
Limiting reactant is Mg; 134 g of FeCl 3 remain.
Limiting reactant is FeCl 3; 87 g of Mg remain.
Limiting reactant is FeCl 3; 2 g of Mg remain.
Limiting reactant is Mg; 104 g of FeCl 3 remain.
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