試題詳解

27. The formation of stalactite is closely related to the concentration of carbon- containing species formed by the dissolution of CaCO₃ in the rocks and CO₂ in the air in natural water bodies. Given that (CaCO₃) = , pM = -log[M] where M = , the variation of pM with pH  in a cave water body at room temperature is shown on the right.  Which of the following is   incorrect  ? 

(A) represents .
(B)
(C) m = 2.75 and n = 4.35
(D) When pH is 10.3,
(E) When pH is increased from 4 to 8, increases faster than .