EES 212 midterm #1

what happens to CO2 when it reacts/combines with H2O is the ocean?
it becomes carbonic acid, H2CO3
in the process of the carbonate buffering system, what happens to carbonic acid (H2CO3)?
Carbonic acid dissociates into H+ and bicarbonate ion(HCO3).
in the process of the carbonate buffering system, what happens to bicarbonate ion (HCO3)
bicarbonate ion dissociates into H+ and carbonate ion (CO3)
if seawater is too basic, what does the carbonate buffering system do in response?
H2CO3 > HCO3– + H+ this lowers pH
if seawater is too acidic, what does the carbonate buffering system do in response?
HCO3 + H+ > H2CO3 this raises pH
what effect does more dissolved COhave on the pH of the ocean and why
more dissolved CO2 leads to more carbonic acid (H2CO3) which drives the dissociation of carbonic acid to create more products, H+ and HCO3. This has the effect of lowering the pH in the world’s oceans