5) A test tube contains 10 cm of salt water having density 1.01 g/cm^3 and 10 cm of fresh water is layered on top. Find an order of magnitude estimate for the time, in seconds, it will take for the fluid in the test-tube to reach nearly uniform salinity through the process of salt-diffusion. Empirical measurements for water that the diffusivity of heat is κ_T = 1.5 × 10−7 m^2/s and the diffusivity of salt is κ_S = 2.0 × 10−10 m^2/s.
5) A test tube contains 10 cm of salt water having density 1.01 g/cm^3 and 10 cm of fresh water is layered on top. Find an order of magnitude estimate for the time, in seconds, it will take for the fluid in the test-tube to reach nearly uniform salinity through the process of salt-diffusion. Empirical measurements for water that the diffusivity of heat is κ_T = 1.5 × 10−7 m^2/s and the diffusivity of salt is κ_S = 2.0 × 10−10 m^2/s.
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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5) A test tube contains 10 cm of salt water having density 1.01 g/cm^3 and 10 cm of fresh water is layered on top. Find an order of magnitude estimate for the time, in seconds, it will take for the fluid in the test-tube to reach nearly uniform salinity through the process of salt-diffusion. Empirical measurements for water that the diffusivity of heat is κ_T = 1.5 × 10−7 m^2/s and the diffusivity of salt is κ_S = 2.0 × 10−10 m^2/s.
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