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7 September, 22:28

Under which of the following sets of conditions would the most o2 (g) be dissolved in h2o (l) ?

a. 5 atm 80 degree celsius

b. 5 atm 20 degree celsius

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Answers (1)
  1. 8 September, 00:48
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    Oxygen will dissolve more in H2O at 5 atm and 20 °C than at 5 atm 80 °C

    Option B is correct.

    Explanation:

    Step 1: Data given

    Pressure = 5 atm

    Temperature = 20 °C or 80 °C

    Step 2:

    At low pressure, a gas has a low solubility. Decreased pressure allows more gas molecules to be present in the air, with very little being dissolved in solution. At high (er) pressure, a gas has a high solubility.

    This means the higher the pressure the more the gas will dissolve. Since The pressure stays constant, it depends on the temperature.

    The solubility of gases in liquids decreases with increasing temperature.

    This means the gas will dissolve more with a lower temperature.

    Oxygen will dissolve more in H2O at 5 atm and 20 °C than at 5 atm 80 °C
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