Answer: 74.04 liters of hydrogen gas is produced.
Explanation:
[tex]Mg+2HCl\rightarrow MgCl_2+H_2[/tex]
According to reaction, 2 mol of HCl gas gives 1 moles of hydrogen gas, then 6 moles of HCl gas will give:[tex]\frac{1}{2}\times 6[/tex] moles of hydrogen gas that is 3 moles.
Pressure of the hydrogen gas at 298 K = 0.990 atm
Volume occupied by the hydrogen gas = V
Number of hydrogen has moles = 3 moles
PV=nRT
[tex]0.990 atm\times V=3 moles\times 0.0820 L atm/K mol\times 298 K[/tex]
V = 74.04 L
74.04 liters of hydrogen gas is produced.
