The oxygen dissolved in water exerts a partial pressure of \( 20 \mathrm{kPa} \) in the vapour a...

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The oxygen dissolved in water exerts a partial pressure of \( 20 \mathrm{kPa} \) in the vapour above water. The molar solubility of oxygen in water is \( \times 10^{-5} \mathrm{~mol} \mathrm{dm}^{-3} \).
(Round off to the Nearest integer).
[Given: Henrys law constant \( =\mathrm{K}_{\mathrm{H}}=8.0 \times 10^{4} \mathrm{kPa} \) for \( \mathrm{O}_{2} \)
Density of water with dissolved oxygen \( \left.=1.0 \mathrm{~kg} \mathrm{dm}^{-3}\right] \)
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