pH of blood is 7.35 to 7.45 pH=6.1+ log [ HCO3I 0. 03x Pco a[Hco3]/[H2Co3]=20:1pH ◼ pH of blood is 7.35 to 7.45 ◼ pH = 6.1 + log [HCO3 - ] 0.03 x Pco2 ◼ [HCO- 3] / [H2CO3] = 20:1