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Which one is having the lowest value of diffusivity?

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

(a) Glucose

(b) Urea

(c) Ethanol

(d) Oxygen

The question was posed to me in a job interview.

My query is from Diffusivity at 25 Degree Celsius and 1 atm Pressure topic in section Modes and Diffusion of Mass Transfer

1 Answer

0 votes
by (39.8k points)
Right option is (a) Glucose

The best I can explain: Thermal diffusivity of glucose is 0.60 while that of urea, oxygen and ethanol are 8.06, 1.80 and 1.00 respectively. Its unit is cm^2 /s.

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