Carbonate, CO3 2 , is an important chemical species in natural waters because of its ability to neutralize acidic solutions: CO 2H H CO3-2 2 3+ + a. Calculate the equilibrium constant for this reaction at 25C. b. Consider the following conditions: [H3O+]=10-7M; [ CO3 2 ]=10-4.5M; [H2CO3]=10-3.5 M In which direction will the reaction proceed? c. Calculate the equilibrium concentration of [H3O+] when [ CO3 2 ] = 0.5[H2CO3]. d. Repeat a, b, and c at 50C