What is the mass of aluminum metal that releases 22.4 L of hydrogen gas at STP from hydrochloric acid? __Al(s)+ __HCl(aq)→ __AlCl3(aq)+ __H₂(g)

Question

Quizplus · Accepted Answer

At STP, 22.4 L of hydrogen gas is equivalent to 1 mole. The balanced equation is 2Al + 6HCl → 2AlCl3 + 3H2. Therefore, 2 moles of Al produce 3 moles of H2. To produce 1 mole of H2, 2/3 moles of Al are needed. The molar mass of Al is 27.0 g/mol, so (2/3) * 27.0 g = 18.0 g of Al is required.

What Is the Mass of Aluminum Metal That Releases 22