Solubility System: Tetrachloroethene with Nitric acid, Ammonium nitrate and Water
Components:

(1) Tetrachloroethene, C2Cl4; [127-18-4] NIST WebBook
(2) Nitric acid, HNO3; [7697-37-2] NIST WebBook
(3) Ammonium nitrate, NH4NO3; [6484-52-2] NIST WebBook
(4) Water, H2O; [7732-18-5] NIST WebBook

Original Measurements

Moiseeva, L. M.; Stepanova, G. G.; Pukhonto, A. N.; Sov. Chem. Ind. 9, 453 (1977).

Variables:

Ambient temperature: 293 K
mol/dm-3 = 0 - 4

Prepared by:

A.L. Horvath

Method/Apparatus/Procedure:

The aqueous electrolyte solutions were saturated with tetrachloroethene in thermostated flasks fitted with stirrers and a mercury seal. Stirring was continued for several days until equilibrium was established. Samples were taken at specific time intervals to check for equilibrium. The concentration of tetrachloroethene in the aqueous phase was measured by gas chromatography.

Source and Purity of Materials:
  1. Type "pure" (MRTU 6-00 No. 6590-70), redistilled and checked by GC before use.
  2. Type "chemically pure".
  3. Type "chemically pure".
  4. Distilled.
Estimated Errors:

Ambient temperature: ±0.2 K.
Mass concentration (m/v) (1): See table above.

Experimental Values:
T (°C) ρ (g/m3) C2 (mol/dm3) C3 (mol/dm3) 100w1a
20.0 160.0 8 x 10-5 1.25 x 10-3 1.58 x 10-2
20.0 232.5 8.0 x 10-4 1.25 x 10-3 2.26 x 10-2
20.0 292.0 2.40 x 10-3 1.25 x 10-3 2.70 x 10-2
20.0 297.5 3.20 x 10-3 1.25 x 10-3 2.69 x 10-2
20.0 334.0 4.00 x 10-3 1.25 x 10-3 2.96 x 10-2

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