How many liters of antimony (III) chloride can be produced from 35 L of chlorine at STP reacting with an excess of antimony? 2Sb + 3Cl2 → 2SbCl3

Answer 1

Interesting question since at STP, antimony(III) chloride is a solid, not a liquid or a gas. Thus, how can we determine the number of liters? Maybe the question is "how many moles of antimony(III) chloride can be produced? If so, here is the solution. If not, I'm bewildered by the question.

2Sb(s) + 3Cl₂(g) ==> 2SbCl₃(s) ... balanced equation

At STP, 1 mol of an ideal gas = 22.4 L

35 L Cl₂ x 1 mol / 22.4 L = 1.56 moles Cl₂

1.56 mols Cl₂ x 2 mols SbCl₃ / 3 mols Cl₂ = 1.04 moles SbCl₃ produced