1 millimole of baking soda is dissolved in water, the ph is 8.3 what is the concentration of H2CO3+ Part B strong acid is added until all bicarbonate is h2co3 at ph 3.5. If the water is equiliberated with a small amount of co2 what is the partial pressure of the Gass volume

23. I millimole of baking soda (NaHCCO3) is dissolved in a liter of pure water. Neglect any possible entry of atmospheric CO2 into the water. a) The pH of the solution is approx. 8.3. What is H2CO3 ? b) Strong acid is added until the pHt is 3.5, at which point essentially all carbonate is present as H2CO3. If the water is then equilibrated W/ a very small gas volume, what is PCO2, the partial pressure of CO2 in the gas volume