The ionization constant of methylamine, CH3NH2, (Kb) is 4.2 x 10–4. Write the  dissociation equation and ionization constant expression for a 50 mM of methylamine.  Calculate [OH-] in M, pOH, pH and [H3O+] in M.

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The ionization constant of methylamine, CH3NH2, (Kb) is 4.2 x 10–4. Write the 
dissociation equation and ionization constant expression for a 50 mM of methylamine. 
Calculate [OH-] in M, pOH, pH and [H3O+] in M.

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