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If O(2) gas in bubbled through water at ...

If `O_(2)` gas in bubbled through water at 293 K, how many millimoles of `O_(2)` gas would dissove in 1 littre of water ? Assume that `O_(2)` exerts a partial pressure of 0.987 bar and `k_(H)` for `O_(2)=34.86` k bar.

Text Solution

Verified by Experts

The correct Answer is:
1.57 milli that `O_(2)`
Step I. Calculation of `x_(O_(2))`
`x_(O_(2))=rho_(O_(2))/k_(H)=((0.98"bar"))/((43860"bar"))=2.83xx10^(-5)`
Step II. Calculation os milli-moles of `O_(2)`
If n moles os `O_(2)` are present in 1 L of water (or 1000 g of water)
`X_(N_(2))=n/(n+55.5)=n/(55.5)`
`n=X_(N_(2))xx55.5=2.83xx10^(-5)xx55.5`
`=157.06xx10^(-5)mol=157.06xx10^(-2)`milli-moles
=1.57 milli-moles
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