In sulphuric acid plants dry air is used for burning of sulphur. Air is dried in contact with concentrated Sulphuric acid. Moisture diffuses through a layer of air, reaches the surface and gets absorbed in it. Here air is said to be non-diffusing were as moisture is diffusing. Which of the following statements are correct?

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In sulphuric acid plants dry air is used for burning of sulphur. Air is dried in contact with concentrated Sulphuric acid. Moisture diffuses through a layer of air, reaches the surface and gets absorbed in it. Here air is said to be non-diffusing were as moisture is diffusing. Which of the following statements are correct?

asked Sep 21, 2022 in Mass Transfer by Julian (39.8k points)

In sulphuric acid plants dry air is used for burning of sulphur. Air is dried in contact with concentrated Sulphuric acid. Moisture diffuses through a layer of air, reaches the surface and gets absorbed in it. Here air is said to be non-diffusing were as moisture is diffusing. Which of the following statements are correct?

(a) Moisture has a source and a sink whereas dry air has a source but no sink

(b) Moisture as well as dry air have a sink

(c) Moisture has a source but no sink whereas dry air has a source as well as sink

(d) Moisture as well as dry sir have no sink

This question was posed to me during an interview.

Enquiry is from Multicomponent Diffusion in portion Diffusion in Solids and Molecular Diffusion in Fluids of Mass Transfer

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Chris · Answer 1 · 2022-10-13T17:33:59+0000

Correct option is (a) Moisture has a source and a sink whereas dry air has a source but no sink

Explanation: A component is said to be diffusing if it has both sources as well as a sink.

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