What volume of chlorine gas will be generated when 4.5 L of fluorine gas reacts with HCl at STP? (2 HCl (aq) + F₂ (g) → Cl₂ (g) + 2 HF (aq))
a. 2.25 L
b. 4.50 L
c. 9.00 L
d. 6.75 L