The air trapped inside a can of Pepsi soda is pure carbon dioxide at a pressure of 2atm. i. What is the concentration of carbon dioxide in the soda in units of mol/L,g/L, and ppm before any of it dissociates in part b below? ii. The carbon dioxide in the soda will change to carbonic acid (assume [CO2]=[H2CO3] ), and carbonic acid is a weak acid:. Using what you know about weak acids, what is the pH of the soda? Use an ICE table