Chapter 4. Heat Capacities and Related Properties of Liquid Mixtures

2010 ◽  
pp. 54-85 ◽  
Author(s):  
Emmerich Wilhelm ◽  
Jean-Pierre E. Grolier
Keyword(s):  
Liquid Mixtures ◽  
Heat Capacities

The heat capacities of acetone, methyl iodide and mixtures thereof in the liquid state

1962 ◽  
Vol 267 (1330) ◽  
pp. 384-394 ◽  
Keyword(s):  
Heat Capacity ◽  
Methyl Iodide ◽  
Atmospheric Pressure ◽  
Excess Heat Capacity ◽  
Liquid Mixtures ◽  
Heat Capacities ◽  
Constant Volume ◽  
Isothermal Compression ◽  
Compound Formation ◽  
Total Heat Capacity

The heat capacities of liquid mixtures of acetone and methyl iodide of various compositions have been determined at atmospheric pressure in the temperature range — 20 to 35 °C. The corresponding compressibilities have also been measured, and the heat capacities at constant volume determined as functions of the temperature and volume. The heat capacities increase on isothermal compression, and with rising temperature at constant volume. Resolution of the total heat capacity into its many components shows that the configurational contribution to the heat capacity at the melting point is R cal mole -1 deg -1 for methyl iodide and about 2 R cal mole -1 deg -1 for acetone. The excess heat capacity at constant volume over that estimated on an additivity basis is small, and rises with a rise in temperature to about 3 % of the total value a t 35 °C. A comparison of the present data with those relating to the acetone + chloroform system indicates that compound formation is less likely in the acetone + methyl iodide system .

Sign in / Sign up

Export Citation Format

Share Document