Anonymous
Anonymous asked in Science & MathematicsChemistry · 1 month ago

What solubility of oxygen gas in water at 40°C is 1.0mmol per liter of solution. What is this concentration in units of mole fraction?

Please kindly have a solution for me to have a better understanding

1 Answer

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  • 1 month ago

    (1 L H2O) × (1000 g/L) / (18.01532 g H2O/mol) = 55.5 mol H2O

    1.0 mmol = 1.0 × 10^-3 mol O2

    (1.0 × 10^-3 mol O2) / (55.5 mol + (1.0 × 10^-3 mol)) =

    1.8 × 10^-5 (the mole fraction of O2 in a liter of H2O

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