P V = n R T
At STP 1 mol is 22.4 liters
so
3 liters =.134 mol of H2
There are 2 mols of Al for every 3 mol of H2
so
mol Al = (2/3)(.134) = .0893 mol Al
which is
.0893 * 27 grams
Aluminum granules are a component of some
drain cleaners because they react with sodium
hydroxide to release both heat and gas bubbles,
which help clear the drain clog. The
reaction is
2 NaOH(aq) + 2 Al(s) + 6 H2O(ℓ) −→
2 NaAl(OH)4(aq) + 3 H2(g)
What mass of aluminum would be needed
to produce 3.00 L of hydrogen gas at STP?
Answer in units of g.
1 answer
1 answer