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The dissolved oxygen decreases when?(a) The temperature is increased(b) The pressure is increased(c) The salinity is decreased(d) The salinity is increasedI had been asked this question in a job interview.My enquiry is from Estimating Oxygen Solubility in portion Mass Transfer of Bioprocess Engineering

Answer»

The correct choice is (d) The salinity is increased

Explanation: Dissolved OXYGEN DECREASES exponentially as SALT levels increase. That is why, at the same pressure and temperature, saltwater holds about 20% LESS dissolved oxygen than freshwater.



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