Answer is: <span> </span>ΔG for <span>methylamine is 18.85 kJ/mol. </span>ΔG = R·T·lnK. ΔG is Gibbs energy. <span>T is the temperature on the Kelvin scale. R is </span><span>ideal gas constant. R = 8.314 J/mol</span>·K. T = 25°C = 293.15 K. Kb = 0.00044. ΔG = - 8.314 J/mol·K · 293.15 K · ln(0.00044). ΔG = 18836.85 J = 18.84 kJ.