Question

Oxygen is much less soluble in water than carbon dioxide, 0.00412 g/100 mL at 20 °C and 760 mm Hg.Calculate the solubility of oxygen gas in water at 20 °C and a pressure of 1150 mm Hg.

Answer 1

Answer:

The solubility of oxygen is 0.00623g/100ml

Explanation:

Given that,

Solubility of oxygen at a pressure of 760 mm of Hg is 0.00412g/100ml

$= > s _{1} = 0.00412g/100ml$

The temperature given is 20°C.We are required to find the solubility of oxygen in water at a pressure of 1150mm of Hg.For that,we use relation from henry law which is

$s=hP$

Here,

h=Henry's Constant

P=Pressure

s=solubility

Here solubility is proportional to pressure therefore,

$\frac{s_{1}}{s_{2}}=\frac{P_{1}}{P_{2}}$

Substituting the known values,we get

$\frac{0.00412}{s_{2}}=\frac{760}{1150} \\ = > s_{2} = 0.00623g/100ml$

Therefore,the solubility of oxygen is 0.00623g/100ml

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