(a) Using dissociation constants from Appendix D, determine the value for the equilibrium constant for each of the following reactions.
(i) HCO3–(aq) + OH-(aq) ⇌ CO32–(aq) + H2O(l)
(ii) NH4+(aq) + CO32–(aq) ⇌ NH3(aq) + HCO3–(aq)
(b) We usually use single arrows for reactions when the forward reaction is appreciable (K much greater than 1) or when products escape from the system, so that equilibrium is never established. If we follow this convention, which of these equilibria might be written with a single arrow?
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