The solubility of o2 at 20c is 1.38 x10^-3. the partial presure of o2 in the air at sea level is 0.27 atm. using henery;s law, calculate the molar concentration of o2 in the surface water of a mountain lake saturated with air at 20C and an atmospheric pressure of 682 TM

The solubility of oxygen at 682 torr is

Explanation:

To calculate the molar solubility, we use the equation given by Henry's law, which is:

Or,

where,

are the initial concentration and partial pressure of oxygen gas

are the final concentration and partial pressure of oxygen gas

We are given:

Conversion factor used:  1 atm = 760 torr

Putting values in above equation, we get:

Hence, the solubility of oxygen gas at 628 torr is

the electrical  conductivity  of asolution  of an electrolyte is measured by determining the resistance of thesolution  between two flat or cylindrical electrodes separated by a fixed distance.

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.