CO2_equilib_and_pH_of_raindrop_with_ANSWERS-1

CO2_equilib_and_pH_of_raindrop_with_ANSWERS-1 - CO 2(g H 2...

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As you know CO 2 is a “hot”, topical gas now days. Its partial pressure in the atmosphere (on average) is P CO2 = 3.8x10 -4 atm? Some other relevant equilibrium constants for CO 2 and is water soluble species are given below: CO 2(aq) CO 2(g) K’ = 29.6 CO 2(aq) + H 2 O H 2 CO 3 , K” = 1.70×10 -3 . H 2 CO 3 H + + HCO 3 - K a1 = 2.5×10 -4 HCO 3 - H + + CO 3 2- , K a2 = 5.61×10 -11 What is the numerical value of the equilibrium constant for
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Unformatted text preview: CO 2(g) + H 2 O ⇋ H + + HCO 3-? CO 2(g) ⇋ CO 2(aq) 1/K’ = 1/29.6 CO 2(aq) + H 2 O ⇋ H 2 CO 3 , K” = 1.70×10-3 . H 2 CO 3 ⇋ H + + HCO 3-K a1 = 2.5×10-4 CO 2(g) + H 2 O ⇋ H + + HCO 3-K = K” x K a1 / K’ =1.44x10-8 What is the pH of the water in a raindrop?...
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