What is the limiting reactant when equal masses of iron(III) chloride and potass

Question

What is the limiting reactant when equal masses of iron(III) chloride and potassium phosphate react in solution?
Choose one answer.
A. potassium chloride
B. potassium phosphate
C. iron(III) chloride
D. Cannot be determined without actual masses.
E. iron(III) phosphate
F. This reaction does not occur

Explanation / Answer

FeCl3 + K3PO4 --> 3KCl + Fe3(PO4)2 Let say the equal mass be 100gm Molar mass of FeCl3 is 162.20 moles of FeCl3 = 100/162.2 = 0.616moles Molar mass of K3PO4 is 212.26 moles of K3PO4 = 100/212.26 = 0.47 moles Hence the limiting reagent is K3PO4

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