Components:
(1) Copper formate,
Cu(CHO2)2; [544-19-4]
NIST WebBook
(2) Water,
H2O; [7732-18-5]
NIST WebBook
Original Measurements
Calame, P.; Z. Phys. Chem. 27U, 401 (1898).
Variables:
Ambient temperature: -0.76 - -0.23 °C
Prepared by:
Method/Apparatus/Procedure:
Freezing point determinations were made with a Beckmann apparatus having a thermometer graduated in 0.01 °C. The copper content was determined gravimetrically.
Source and Purity of Materials:
- Kahlbaum or Merck reagents were used.
Estimated Errors:
Ambient temperature: ±0.01°C.
Experimental Values:
Freezing points of the Cu(CHO2)2-H2O system.
| T (°C) | 100w1 | m1 (mol/kg)a | Phase (s) |
|---|---|---|---|
| -7.60 x 10-1 | 3.72 | 2.52 x 10-1 | Ice |
| -4.17 x 10-1 | 1.9 | 1.26 x 10-1 | Ice |
| -2.30 x 10-1 | 9.6 x 10-1 | 6.3 x 10-2 | Ice |
(a) These values were calculated by the compiler.
