What is the limiting reagent when 3.10 mol of #SO_2# reacts with 2.75 mol of #O_2# according to the equation: #SO_2 + O_2 -> SO_3#?
Your equation is incorrect; it is not stoichiometrically balanced.
Synthesis of sulfur trioxide is represented stoichiometrically:
This equation tells us that
Clearly, given this equation, there is excess dioxygen gas. The given molar quantity of sulfur dioxide requires only
You will have to calculate the mass of product yourself.