# Problem: Pyridine and methanol can act as weak bases. Their Kb values are given below. Consider the compounds water, ethylamine, acetone, and aniline, whose Kb values can be found here. Classify them by whether they can be appreciably (Keq&gt; 1) protonated by: pyridinium, CH3OH2+, both, or neither. A higher Kb means a stronger base, and a stronger base is more likely to accept a proton (i. e. , become protonated). A compound can be protonated by pyridinium if it is a stronger base than pyridine. A compound can be protonated by CH3OH2+ if it is a stronger base than methanol.

###### FREE Expert Solution

For this problem, the smaller the Kb the more unlikely the base to accept a proton

Analyzing each molecule:

a. ethylamine:

6.3x10-4 > 1.5x10-9 (pyridinium)

6.3x10-4 > 6.3x10-17 (methanol+)

Hence, ethylamine can be protonated by pyridinium and methanol+

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###### Problem Details

Pyridine and methanol can act as weak bases. Their Kb values are given below.

Consider the compounds water, ethylamine, acetone, and aniline, whose Kb values can be found here. Classify them by whether they can be appreciably (Keq> 1) protonated by: pyridinium, CH3OH2+, both, or neither.

A higher Kb means a stronger base, and a stronger base is more likely to accept a proton (i. e. , become protonated).

A compound can be protonated by pyridinium if it is a stronger base than pyridine. A compound can be protonated by CH3OH2+ if it is a stronger base than methanol.