Question

Calculate the PH of water in a cloud that has equilibrated with SO2(g) ta a concentration of 1.0 ppm by volume. A solution Contain 2 mg/L CN- and is at pH 8.5. a). What is the concentration of HCN (aq) in solution? b) If the partial pressure of HCN (g) above the solution is 10^-6 atm Would HCN transfer from the gas phase into the solution or from the solution into the gas, or is the system at equilibrium?

Answer 1

a)Concentration of HCN (aq) in solution=$=0.077×10 ^{-2.26}M$

b) $1.3×10 ^{-2.74} M$