What is the density of fluorine gas, F2, at STP? E) 0.848 g/L B) 1.18 g / L C) 1.70 g/L D) 0.589 g/L

C) 1.70 g/L

Explanation:

Using ideal gas equation as:

PV=nRT

where,

P is the pressure

V is the volume

n is the number of moles

T is the temperature

R is Gas constant having value = 0.0821 L. atm/K. mol

Also,

Moles = mass (m) / Molar mass (M)

Density (d) = Mass (m) / Volume (V)

So, the ideal gas equation can be written as:

PM=dRt

At STP,

Pressure = 1 atm

Temperature = 273.15 K

Molar mass of fluorine gas = 38 g/mol

Applying the equation as:

1 atm * 38 g/mol = d * 0.0821 L. atm/K. mol * 273.15 K

⇒d = 1.70 g/L