The action of some commercial drain cleaners is based on the following reaction:
2 NaOH(s) + 2 Al(s) + 6 H₂O(l) --> 2 NaAl(OH)₄(s) + 3 H₂(g)
What is the volume of H₂ gas formed at STP when 6.32 g of Al reacts with excess NaOH?
A. 9.12 L
B. 9.95 L
C. 6.08 L
D. 4.05 L