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Kb for Methylamine and Chemical Equations

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The Kb for methylamine, CH3NH2, is 4.4 x 10-4 at 25°C
a) write a chemical equation for the equilibrium that corresponds to Kb
b) by using the value of Kb, calculate ΔG° for the equilibrium in part (a)
c) what is the value ΔG at equilibrium ?
d) What is the value of ΔGwhen [H+] = 1.5 x 10-8 M, [CH3NH3+] = 5.5 x 10-4 M, and [CH3NH2] = 0.120 M

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The expert writes a chemical equation for the equilibrium that corresponds to Kb.

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The Kb for methylamine, CH3NH2, is 4.4 x 10-4 at 25°C
a) write a chemical equation for the equilibrium that corresponds to Kb

CH3NH2(aq) + H2O(l)  CH3NH3+ (aq) ...

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