Letter | Published:

Diffusion of Heavy into Light Water

Abstract

We have made measurements of the diffusion coefficient of heavy water (0.5–3.0 mol per cent) in aqueous solutions. The value provisionally obtained is about 9 × 104 cm.2/sec. at 15° C. Since this is appreciably greater than is to be expected from the mass diffusion of water molecules (the largest recorded diffusion coefficient, namely, that of H2 in H2O, is about 4 × 105 cm.2/sec.), it appears that an atomic interchange, such as has been suggested by Bernal and Fowler1 to account for the abnormal electrolytic mobility of the hydrogen and hydroxyl ions, is involved.

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References

  1. 1

    J. Chem. Phys., 1, 515; 1933.

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