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2) You prepare a 0
2) You prepare a 0.01M solution of sodium borate (NaH4BO4) (borate is the conjugate base of boric acid H3BO3, pKa = 9.15) in pure water.
B(OH)3(aq) + H2O(l) ? B(OH)4−(aq) + H+(aq)
- What is the pH of the solution?
- What concentration of HCl would you have to add to adjust the pH of the solution to 9?
- What concentration of HCl would you have to add to adjust the pH of the solution to 4?
2) What should be the Alkalinity, total dissolved inorganic carbon (DIC), and pH of a puddle of rain on an outcrop of calcite at 25°C? Assume equilibrium is reached with calcite and with atmospheric CO2 (4e-4 atm).
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