Estimate the diffusion coefficient of the Na+ and Cl− ions in water at 298 K from the molar conductivity at infinite dilution, Λ?? ∞ (NaCl) = 138.46 S cm2 mol−1 and the transport number,t(Na+) = 0.377. Calculate the mean distance travelled by Cl− ions over a 7 hour period.

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter12: Solutions

Section: Chapter Questions

Problem 12.72QE

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Question

Estimate the diffusion coefficient of the Na+ and Cl− ions in water at 298 K from the molar
conductivity at infinite dilution, Λ??
∞ (NaCl) = 138.46 S cm2 mol−1 and the transport number,t(Na+) = 0.377. Calculate the mean distance travelled by Cl− ions over a 7 hour period.
Question 7
Describe the structure and nature of the ionic atmosphere about an ion. Explain what
happens to the ionic atmosphere in the presence of an electric field.

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