Assuming ideal behavior, which of these gas samples has the greatest volume at stp? assuming ideal behavior, which of these gas samples has the greatest volume at stp? 1 g of o2 1 g of h2 1 g of ar

Data Given:

Temperature = 273 K

Pressure = 1 atm

Mole of O₂ = 1 g / 32 g. mol⁻¹ = 0.03125 mol

Mole of H₂ = 1 g / 2.016 g. mol⁻¹ = 0.0496 mol

Mole of Ar = 1 g / 39.94 g. mol⁻¹ = 0.025 mol

Solution:

As Ideal Gas Equation is given as,

P V = n R T

Solving for V,

V = n R T / P

Solving for O₂;

V = (0.03125 mol * 0.08205 atm. L. mol⁻¹. K⁻¹ * 273 K) : 1 atm

V = 0.699 L

Solving for H₂;

V = (0.0496 mol * 0.08205 atm. L. mol⁻¹. K⁻¹ * 273 K) : 1 atm

V = 1.11 L

Solving for Ar;

V = (0.025 mol * 0.08205 atm. L. mol⁻¹. K⁻¹ * 273 K) : 1 atm

V = 0.55 L

Result:

The correct answer is H₂. 1 g of H₂ occupies more volume as compare to 1 g of O₂ and 1 g of Ar.