From

   [H2CO3] = [H+]2・[DIC]/ ([H+]2 + K1[H+] + K1K2)    equation (7)

 pCO2 =[H2CO3]/K0     equation (2)


 pCO2 = { [H+]2・[DIC]/ ([H+]2 + K1[H+] + K1K2) }K0

 Transform the equation,

( [H+]2 + K1[H+] + K1K2) K0pCO2 = [H+]2・[DIC]


 (K0pCO2 -[DIC])[H+]2 + K1K0pCO2 ・[H+]+ K1K2K0pCO2 = 0

Solve the quadratic equation for this [H+].




It is a lengthy process, but please use paper and pencil and calculate carefully.

(At this stage, the ± in front of the root cannot be determined, but assign a numerical value and choose the one that is positive.)

마지막 수정됨: 화요일, 18 7월 2023, 10:18 AM