Question

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describe what happens when carbon dioxide dissolves in seawater by putting the steps below in the correct order, starting with dissolution on top.
instructions
$h_2co_3$ dissociates into $hco_3$ (bicarbonate) and $h^+$ or into $co_3^{2 -}$ (carbonate) and $2h^+$
carbon dioxide dissolves in seawater.
$co_2$ combines with $h_2o$ to form $h_2co_3$ (carbonic acid)
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Explanation:

Step1: Start with dissolution

Carbon dioxide dissolves in seawater.

Step2: Formation of carbonic acid

$CO_2$ combines with $H_2O$ to form $H_2CO_3$ (carbonic acid).

Step3: Dissociation step

$H_2CO_3$ dissociates into $HCO_3^-$ (bicarbonate) and $H^+$ or into $CO_3^{2 -}$ (carbonate) and $2H^+$.

Answer:

1. Carbon dioxide dissolves in seawater.
2. $CO_2$ combines with $H_2O$ to form $H_2CO_3$ (carbonic acid).
3. $H_2CO_3$ dissociates into $HCO_3^-$ (bicarbonate) and $H^+$ or into $CO_3^{2 -}$ (carbonate) and $2H^+$.