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Constants (at 25oC) you might need for the following calculations: KH (CO2) = 3.4 x 10-2...

Constants (at 25oC) you might need for the following calculations:

KH (CO2) = 3.4 x 10-2 mol L-1 atm-1

Ka1 (H2CO3) = 4.5 x 10-7

Ka2 (HCO3-) = 4.7 x 10-11

Ksp(CaCO3) = 4.6 x 10-9

1. Calculate the solubility of CO2 in water if the water is in equilibrium with the atmosphere only.

2. Assuming water is in equilibrium with CaCO3 only under standard conditions, calculate: 1) the solubility of CaCO3 in water; 2) the pH of the water.

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