Accession Number : AD0694268

Title :   THE FREEZING OF HOT AND COLD WATER,

Corporate Author : NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) DIV OF APPLIED CHEMISTRY

Personal Author(s) : Kell,G. S.

Report Date : 25 NOV 1968

Pagination or Media Count : 2

Abstract : It is widely believed, at least in Canada, that hot water will freeze more quickly than cold water. Experiment and theory agree that hot water freezes faster than cold for sufficiently high starting temperatures, if the cooling is by evaporation. Cooling in a wooden pail or barrel is mostly by evaporation. The folklore on this matter may well have started a century or more ago when wooden pails were usual. Considerable heat is transferred through the sides of metal pails, so the belief is unlikely to have started from correct observations after metal pails became common. (Author)

Descriptors :   (*WATER, *FREEZING), EVAPORATION, COOLING, VAPOR PRESSURE, CANADA

Subject Categories : Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE