Problem: The Kb for methylamine, CH3NH2, at 25 C is 4.4 x 10-4A. Write the chemical equation for the equilibrium that corresponds to Kb.B. By using the value of Kb, calculate ΔGo for the equilibrium in part A.C. What is the value of ΔG at equilibrium?D. What is the value of ΔG when [H+] = 1.6 ×10-8 M, [CH3NH3+] = 5.5 ×10-4 M, and [CH3NH2] = 0.130 M?

FREE Expert Solution

A. CH3NH2 + H2O ⇌ CH3NH3+ + OH-


Kb = [CH3NH3+][OH-][CH3NH2]

*ignore liquids such as H2O


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Problem Details

The Kb for methylamine, CH3NH2, at 25 C is 4.4 x 10-4

A. Write the chemical equation for the equilibrium that corresponds to Kb.

B. By using the value of Kb, calculate ΔGo for the equilibrium in part A.

C. What is the value of ΔG at equilibrium?

D. What is the value of ΔG when [H+] = 1.6 ×10-8 M, [CH3NH3+] = 5.5 ×10-4 M, and [CH3NH2] = 0.130 M?

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