3. Acids and Bases
pKa
36PRACTICE PROBLEM
The compound methyl propionate can react as a very weak base (pKb = 20.5). Taking into consideration the two possible protonation sites on methyl propionate to give the conjugate acid, answer the following:
i) Provide the structures of the possible conjugate acids.
ii) Label the most stable conjugate acid.
iii) Calculate the pKa of the more stable conjugate acid.
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The compound methyl propionate can react as a very weak base (pKb = 20.5). Taking into consideration the two possible protonation sites on methyl propionate to give the conjugate acid, answer the following:
i) Provide the structures of the possible conjugate acids.
ii) Label the most stable conjugate acid.
iii) Calculate the pKa of the more stable conjugate acid.