# Chemistry

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Which of the following should have the largest Henry's law constant (kh) in water?
Ar
CO2
CO
CH3CH3
Xe

• Chemistry -

I would think CO2 because CO2 reacts with water to form H2CO3 and the corresponding ions, HCO3^- and CO3^-2 and H^+.
CO2 + H2O ==> H2CO3 ==>H^+ + HCO3^-
HCO3^- ==> H^+ + CO3^-2.
I look up the molarity of CO2, CO, and Ar and CO2 was the highest. The other two weren't listed.

• Chemistry -

actually that is wrong. i put that as my answer choice as first too.

• Chemistry -

• Chemistry -

CO

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