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Chemistry Forums for Students => Inorganic Chemistry Forum => Topic started by: Silver76 on October 21, 2018, 11:35:06 AM

Title: addition of HCl to pure water in equilibrium with the atmosphere and calcite
Post by: Silver76 on October 21, 2018, 11:35:06 AM

I already calculated the pH of the solution of calcite in pure water and in equilibrium with the atmosphere (open system). The pH was 8.26. But now I need to calculate the concentration of HCl that must be added to this system to low the pH to 7.4. I know that I have to modify the charge balance, but I do not know how. Can somebody help me?

Title: Re: addition of HCl to pure water in equilibrium with the atmosphere and calcite
Post by: Borek on October 21, 2018, 01:44:34 PM

The only thing that will change the charge balance is the presence of Cl^-.