Solved: When carbon dioxide dissolves in water, it undergoes a multistep equilibrium

Chapter 18, Problem 18.149

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When carbon dioxide dissolves in water, it undergoes a multistep equilibrium process, with Koverall _ 4.5_10_7, which is simplified to the following: (a) Classify each step as a Lewis or a Brnsted-Lowry reaction. (b) What is the pH of nonpolluted rainwater in equilibrium with clean air ( in clean air _ 3.2_10_4 atm; Henrys law constant for CO2 at 25_C is 0.033 mol/L_atm)? (c) What is [CO3 2_] in rainwater (Ka of HCO3 _ _ 4.7_10_11)? (d) If the partial pressure of CO2 in clean air doubles in the next few decades, what will the pH of rainwater become?

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