Respuesta :
Answer : The density of gas at STP is, 2.19 g/L
Explanation :
To calculate the density of gas we are using ideal gas equation:
[tex]PV=nRT\\\\PV=\frac{w}{M}RT\\\\P=\frac{w}{V}\times \frac{RT}{M}\\\\P=\frac{\rho RT}{M}[/tex]
where,
P = pressure of gas = 1 atm (at STP)
T = temperature of gas = 273 K (at STP)
R = gas constant = 0.0821 L.atm/mole.K
M = molar mass of gas = 49 g/mole
Now put all the given values in the ideal gas equation, we get:
[tex]1atm=\frac{\rho \times 0.0821L.atm/mole.K\times 273K}{49g/mol}[/tex]
[tex]\rho=2.19g/L[/tex]
Therefore, the density of gas at STP is, 2.19 g/L
