According to the equation CH3NH2(aq)+H2O(l)=>CH3NH3+(aq)+OH-(aq) Kb=4.4 x 10^-4 CH3NH2, is a weak base that mix with H2O. CH3NH2 of 50.0 mL solution is obtained by a student and determines the pH of the solution ? also Write the expression for the equilibrium constant, Kb, for methylamine also compute the molar concentration of OH- in the 50.0 mL sample of the CH3NH2 solution.