gases32

Gases

32) V = 456 mL          m = 3.18 g C₃H₈          R = 0.0821 L•atm•mol^-1•K^-1            T = 23°C     

      (a) PV = nRT = 3.18 g C₃H₈ * 1 mol C₃H₈/44.11 g C₃H₈ * 0.0821 L•atm•mol^-1•K^-1 * 296 K/(456 mL * 1 L/10³ mL)

            P = 3.84 atm

      (b) V₁ = 456 mL              V₂ = ?

            P₁ = 3.84 atm            P₂ = 1.00 atm

            T₁ = 296 K                T₂ = 273 K   

            P₁V₁/T₁ = P₂V₂/T₂

            V₂ = 3.84 atm * 456 mL * 1 L/10³ mL * 273 K/296 K/1.00 atm = 1.61 L

       (c) V₁ = 456 mL             V₂ = 456 mL

             P₁ = 3.84 atm           P₂ = ?

             T₁ = 296 K               T₂ = 130° F

             P₁/ T₁ =  P₂/T₂

             P₂ = 3.84 atm * 5/9 * ((130-32) + 273)/296 K = 4.25 atm