50) What pressure of carbon dioxide is required to keep the carbon dioxide concentration in a bottle of club soda at 0.12 mol L^-1 at 25deg C?

(Kh = 3.4 x 10^-2 mol L^-1 bar^-1)

a) 87.5 bar

b) 0.12 bar

c) 0.034 bar

d) 0.28 bar

e) 3.5 bar

49) Use Henry Law to determine the molar solubility of helium at a pressure of 1.0 bar and a temperate of 25 deg C (Kh=3.7 x 10^-4 mol L^-1 bar^-1)

a) 2.7 x 10^3 mol L-1

b) 9.3 x 10^-3 mol L^-1

c) 1.0 mol L^-1

d) 1.5 x 10^-5 mol L^-1

e) 3.7 x 10^-4 mol L^-1