Asked by Anonymous
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.
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.
Answers
Answered by
Damon
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
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