Write equations showing how each weak base ionizes water to form OH^–. Also write the corresponding expression for K_b. a. NH₃ b. HCO₃^– c. CH₃NH₂

Verified step by step guidance

1. Identify the weak base and its reaction with water. For each base, write the chemical equation showing the base accepting a proton from water to form its conjugate acid and hydroxide ion (OH^-).
2. For NH_3, write the equation: NH_3 + H_2O \rightleftharpoons NH_4^+ + OH^-.
3. For HCO_3^-, write the equation: HCO_3^- + H_2O \rightleftharpoons H_2CO_3 + OH^-.
4. For CH_3NH_2, write the equation: CH_3NH_2 + H_2O \rightleftharpoons CH_3NH_3^+ + OH^-.
5. Write the expression for the base dissociation constant (K_b) for each reaction. For example, for NH_3, K_b = \frac{[NH_4^+][OH^-]}{[NH_3]} and similarly for the others.