Dissociation Pressure of Copper Sulphate Pentadeuterate

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Abstract

J. R. PARTINGTON and K. Stratton1 have found by a tensimetric method the dissociation pressure of copper sulphate pentadeuterate to be 6.655 mm. Hg at 25° C, and 9.285 mm. Hg at 30° C. One of us, in collaboration with H. Perpérot2, has constructed a tensimeter by means of which he ascertained in a preliminary experiment that the dissociation pressure of copper sulphate pentadeuterate is lower than that of the pentahydrate. Continuing this research, we have modified the original tensimeter so that the pressures are now measured by means of an ordinary shortened manometer instead of a differential one, the new results being as follows: For 25° the value of 6·5 mm. Hg is found by inter polation.

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References

  1. 1

    NATURE, 137, 1075 (1936).

  2. 2

    J. Phys. et le Rad., vii. 6, 439 (1935).

  3. 3

    NATURE, 138, 121 (1936).

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