Chemistry, 17.06.2021 19:10, photon22

I would like to make a solution of Sodium Carbonate that has a pH of 12.3, how many grams do I need to add to a liter of solution to make this? (the Kb of the phosphate ion is 1.8 x 10 -4).

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I would like to make a solution of Sodium Carbonate that has a pH of 12.3, how many grams do I need...