Phase Diagrams Related with Daily Life-Focusing on aqueous solutions-

Accession number;05A0164771
Title;Phase Diagrams Related with Daily Life-Focusing on aqueous solutions-
Author; ISHIDA KIYOHITO (Tohoku Univ., New Ind. Creation Hatchery Center, JPN)
Journal Title;Nachi Bus News
Journal Code:F0439A
ISSN:
VOL.6;NO.A1-D1;PAGE.A1.1(1),A1.1-A1.7(2005)
Figure&Table&Reference;FIG.10
Pub. Country;Japan
Language;Japanese
Abstract;This article presents the relation between phase diagrams and everyday life, focusing on water and aqueous solutions. The pressure-temperature diagram of water explains why it is impossible to cook delicious rice at high elevations due to the drop in the boiling point of water. The eutectic-type phase diagram of the water-air binary system shows that when tap water is used to make ice in the refrigerator, the resulting ice is cloudy and also suggests how to make clear ice. According to the phase diagram of the water-salt system, it can be explained why we use salt to melt snow and the best way of cooking a delicious green soybeans. Finally, the stable and metastable phase diagrams of the water-alcohol system is presented in relation to commercially available whiskey, where the method for transforming ordinary whiskey into high quality whiskey is suggested. Phase diagrams of alloys and ceramics, which play key roles in the development of advanced materials, are also shown. (author abst.)