Calculate the pH of rainwater (freshwater) (carbon dioxide is in equilibrium with the atmosphere) at 25°C
Author: kegasaExecutions: 44
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Hp = sqrt( K0*K1*pCO2+Kw );
pH = -log( K0*K1*pCO2+Kw )/2;
/* Dissolved inorganic carbon (DIC) */
DIC = Hp + K0*pCO2;
H2CO3 = K0*pCO2;
HCO3m = K1*H2CO3/Hp;
print(Hp);
print(pH);
print(DIC);
print(H2CO3);
print(HCO3m);
print(DIC*10^6);
print(H2CO3*10^6);
print(HCO3m*10^6);
pH = -log( K0*K1*pCO2+Kw )/2;
/* Dissolved inorganic carbon (DIC) */
DIC = Hp + K0*pCO2;
H2CO3 = K0*pCO2;
HCO3m = K1*H2CO3/Hp;
print(Hp);
print(pH);
print(DIC);
print(H2CO3);
print(HCO3m);
print(DIC*10^6);
print(H2CO3*10^6);
print(HCO3m*10^6);
| H+ | mol/L |
| pH | |
| DIC | mol/L |
| Carbonic acid H₂CO₃ | mol/L |
| HCO3- | mol/L |
| DIC | μmol/L |
| Carbonic acid H₂CO₃ | μmol/L |
| HCO3- | μmol/L |
Calculates the pH of rainwater (freshwater).
https://repun-app.fish.hokudai.ac.jp/mod/page/view.php?id=2291
https://repun-app.fish.hokudai.ac.jp/mod/page/view.php?id=2291
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Calculations based on a water temperature of 25°C