Chemical Equilibria

Ambient CO partial pressure:

Dissolved molecular CO :

At neutral pH, M.
First dissociation:

Second dissociation is negligible (very tiny):

Thus total dissolved inorganic carbon:

Compute:


Convert to M:

Thus the answer is:

Step 1: Recall formula for equilibrium discharge.
where - = catchment area in m , - = rainfall excess in m, - = duration of excess rainfall in seconds.
Step 2: Convert given values.

Step 3: Substitute into formula.
Final Answer: