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Which one is having the highest value of diffusivity? (a)Hydrogen

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+1 vote
in Mass Transfer by (37.1k points)
Which one is having the highest value of diffusivity?

(a) Hydrogen

(b) Oxygen

(c) Water

(d) Methanol

I have been asked this question by my college professor while I was bunking the class.

This is a very interesting question from Diffusivity at 25 Degree Celsius and 1 atm Pressure topic in portion Modes and Diffusion of Mass Transfer

1 Answer

0 votes
by (39.8k points)
The correct choice is (a) Hydrogen

Best explanation: Thermal diffusivity of hydrogen is 0.410 while that of oxygen, water and methanol are 0.206, 0.259 and .0159 respectively. Its unit is cm    ^2/s.

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