In a gas mixture of hydrogen and oxygen, steady state equimolar counter diffusion is occurring at a total pressure of 100 kPa and temperature of 20 C. If the partial pressures of oxygen at two planes 0.01 m apart, and perpendicular to the direction of diffusion are 15 kPa and 5 kPa, respectively and the mass diffusion flux of oxygen in the mixture is 1.6 * 10 5 kmol/m2.sec, calculate the molecular diffusivity for the system.For equimolar counter current diffusion:

In a gas mixture of hydrogen and oxygen, steady state equimolar counte

1.	In a gas mixture of hydrogen and oxygen, steady state equimolar counter diffusion is occurring at a total pressure of 100 kPa and temperature of 20 C. If the partial pressures of oxygen at two planes 0.01 m apart, and perpendicular to the direction of diffusion are 15 kPa and 5 kPa, respectively and the mass diffusion flux of oxygen in the mixture is 1.6 * 10⁵ kmol/m².sec, calculate the molecular diffusivity for the system. For equimolar counter current diffusion:
A.	n<a href="https://www.sanfoundry.com/wp-content/uploads/2018/03/bioprocess-engineering-questions-answers-molecular-diffusion-q6.png"><img alt="Find molecular diffusivity for the system if pressure of 100 kPa & temperature of 20 C" class="alignnone size-full wp-image-208244" height="43" src="https://www.sanfoundry.com/wp-content/uploads/2018/03/bioprocess-engineering-questions-answers-molecular-diffusion-q6.png" width="134"/></a>
B.	2.898 10<sup>-5</sup> m<sup>2</sup>/sec
C.	3.898 10<sup>-5</sup> m<sup>2</sup>/sec
D.	2.989 10<sup>-5</sup> m<sup>2</sup>/sec
E.	3.989 10<sup>-5</sup> m<sup>2</sup>/sec
Answer» C. 3.898 10<sup>-5</sup> m<sup>2</sup>/sec