If 0.0394 M aqueous KCl is produced stoichiometrically according to the balanced equation in a reaction solution with a total volume of1270 mL, what volume (L) of gaseous SO2 measured at STP is produced?
K2SO3(aq) + 2 HCl(aq) →SO2(g) + 2 KCl(aq) + H2O(l)