Write the reaction and the corresponding \(K_{\mathrm{b}}\) equilibrium expression for each of the following substances acting as bases in water. a. aniline, \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{2}\) b. dimethylamine, \(\left(\mathrm{CH}_{3}\right)_{2} \mathrm{NH}\)

The reaction and \(K_{\mathrm{b}}\) equilibrium expression for aniline as a base in water are: \(\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{2}+H_{2}O \rightarrow \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{3}^{+}+\mathrm{OH}^{-}\) \[K_{\mathrm{b}} =\frac{\left[\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{3}^{+}\right]\left[\mathrm{OH}^{-}\right]}{\left[\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{2}\right]}\] The reaction and \(K_{\mathrm{b}}\) equilibrium expression for dimethylamine as a base in water are: \(\left(\mathrm{CH}_{3}\right)_{2} \mathrm{NH}+H_{2}O \rightarrow \left(\mathrm{CH}_{3}\right)_{2} \mathrm{NH}_{2}^{+}+\mathrm{OH}^{-}\) \[K_{\mathrm{b}} =\frac{\left[\left(\mathrm{CH}_{3}\right)_{2} \mathrm{NH}_{2}^{+}\right]\left[\mathrm{OH}^{-}\right]}{\left[\left(\mathrm{CH}_{3}\right)_{2} \mathrm{NH}\right]}\]