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Maharg
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Homework Statement
Calculate the pH of rainwater in equilibrium with SO2 in a polluted air mass for which
the sulfur dioxide concentration is 1ppm.
SO2(g) +H2O(g) = H2SO3(aq) Kh=1M/atm
H2SO3 = HSO3- + H+ Ka=1.7x10-2M
Homework Equations
The Attempt at a Solution
I'm pretty lost for this one.
I converted SO2 1 ppm to 1E-6 atm. Set up EQ expression but have two unknowns.
1 M/atm = (1E-6 atm)[H2O] / [H2SO3]
I don't know where to go from here. Even if I figure can calculate H2SO3 I'll still have two unknowns in second reaction. I don't think water can be 1 M as it is not a liquid. Please can someone give me a suggestion where to start.
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