Question

At standard temperature and pressure the molar volumes of CO2 and NH3 gases are 22.31 and 22.40 L, respectively. The density of crystalline CO2 at 160 K is 1.56 g/cm^3. Calculate the molar volumes.

Answer 1

Molar volume of CO₂ at 160 K = 0.02820 L per mole

molar volume of NH₃ at 160 K = 0.02024 L per mole

Note: The question is incomplete. The complete question is given below:

At standard temperature and pressure the molar volumes of CO2 and NH3 gases are 22.31 and 22.40L respectively. The densities of crystalline CO2 and NH3 at 160K are 1.56 and 0.84 g/cm^3, respectively. Calculate their molar volumes

Explanation:

molar mass of CO2 = 44.0 g/mol

molar mass of NH3 = 17.0 g/mol

Density = mass/volume

Therefore, Volume = mass/density

Volume of CO2 = mass of CO2/ density of CO2

Volume of CO2 = 44.0 g/mol / 1.56 g/cm³ = 28.20 cm³ per mole

Converting to liters 28.20 * 1 L/1000 cm³ = 0.02820 L per mole

Therefore, molar volume of CO2 at 160 K = 0.02820 L per mole

Volume of NH3 = mass of NH3/ density of NH3

Volume of NH3 = 17.0 g/mol / 0.84 g/cm³ = 20.24cm³ per mole

Converting to Liters; 20.24 cm³ * 1 L/1000 cm³ = 0.02024 L per mole

Therefore, molar volume of NH3 at 160 K = 0.02024 L per mole