The most important buffer system in water is the carbon dioxide system of acid/base reactions. CO2(g) + CO2(aq) + H20(1) + *H2CO3 > H* + HCO3 2H* + CO32 A sample of water has a pH of 5.0 the concentration of HCO3 is 122 mg L-1and the CO32- concentration is 60.0 mg L-1. What is the approximate alkalinity (ALK) in the water as CaCO3? Assume there is no exchange between the solution and the atmosphere and the temperature is 25°C. ALK= [HCO3]+ 2[CO32]]

Structural Analysis
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Chapter2: Loads On Structures
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The most important buffer system in water is the carbon dioxide system of acid/base
reactions.
CO2(g) → CO2(aq) + H2O(1) → *H2CO3 +→ H* + HCO3 2H* + CO32-
A sample of water has a pH of 5.0 the concentration of HCO3 is 122 mg L-1and the CO3-
concentration is 60.0 mg L-1. What is the approximate alkalinity (ALK) in the water as
CaCO3? Assume there is no exchange between the solution and the atmosphere and
the temperature is 25°C. ALK= [HCO3] + 2[CO3²]]
Transcribed Image Text:The most important buffer system in water is the carbon dioxide system of acid/base reactions. CO2(g) → CO2(aq) + H2O(1) → *H2CO3 +→ H* + HCO3 2H* + CO32- A sample of water has a pH of 5.0 the concentration of HCO3 is 122 mg L-1and the CO3- concentration is 60.0 mg L-1. What is the approximate alkalinity (ALK) in the water as CaCO3? Assume there is no exchange between the solution and the atmosphere and the temperature is 25°C. ALK= [HCO3] + 2[CO3²]]
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