Henderson-Hasselbalch方程 pH=pKa+lg [HCO,-] [H2CO3] =pKa+lg 20 1 =6.1+1.3=7.4Henderson Henderson -Hasselbalch Hasselbalch方程 pH=pKa +lg [HCO 3 － ] [H 2CO 3 ] =pKa +lg 20 1 = 6.1 +1.3 = 7.4