57. The pH of normal, unpolluted rainwater is controlled by carbonic acid equilibrium: CO₂(g) → CO₂(aq) + H₂CO3° (a) Write down the equilibrium expressions (K) for the three carbonate reactions. (at) (b) What is the pH of rainwater in equilibrium with atmospheric CO2 (Pco2 = 10-3.5 atm)? Assume that the pH will be controlled by dissociation of carbonic acid (H₂CO30) to HCO3- (i.e., [HCO3] [H*]). Hence need consider only the first and the second reactions in the series of carbonate reactions. Known Kco2 = 10-1.46, K₁= 10-6.35, pH = -log[H*].
57. The pH of normal, unpolluted rainwater is controlled by carbonic acid equilibrium: CO₂(g) → CO₂(aq) + H₂CO3° (a) Write down the equilibrium expressions (K) for the three carbonate reactions. (at) (b) What is the pH of rainwater in equilibrium with atmospheric CO2 (Pco2 = 10-3.5 atm)? Assume that the pH will be controlled by dissociation of carbonic acid (H₂CO30) to HCO3- (i.e., [HCO3] [H*]). Hence need consider only the first and the second reactions in the series of carbonate reactions. Known Kco2 = 10-1.46, K₁= 10-6.35, pH = -log[H*].
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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![57. The pH of normal, unpolluted rainwater is controlled by carbonic acid equilibrium:
COz(g) > COz(aq) + H2CO3°
(a) Write down the equilibrium expressions (K) for the three carbonate reactions. Mat
16
(b) What is the pH of rainwater in equilibrium with atmospheric CO2 (Pco2 = 10-3.5 atm)?
Assume that the pH will be controlled by dissociation of carbonic acid (H₂CO3º) to
HCO3- (i.e., [HCO3] [H*]). Hence need consider only the first and the second reactions
in the series of carbonate reactions. Known Kco2 = 10-1.46, K₁ = 10-6.35, pH = -log[H*].
(INATE)
14](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F216d8975-823a-443e-8abc-06f056adfa09%2F33dfa184-d5f9-4411-855e-639945bcf207%2Fvlw4qlv_processed.jpeg&w=3840&q=75)
Transcribed Image Text:57. The pH of normal, unpolluted rainwater is controlled by carbonic acid equilibrium:
COz(g) > COz(aq) + H2CO3°
(a) Write down the equilibrium expressions (K) for the three carbonate reactions. Mat
16
(b) What is the pH of rainwater in equilibrium with atmospheric CO2 (Pco2 = 10-3.5 atm)?
Assume that the pH will be controlled by dissociation of carbonic acid (H₂CO3º) to
HCO3- (i.e., [HCO3] [H*]). Hence need consider only the first and the second reactions
in the series of carbonate reactions. Known Kco2 = 10-1.46, K₁ = 10-6.35, pH = -log[H*].
(INATE)
14
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