The production of chlorine by action of hydrochloric acid on chlorates

✍ Scribed by H.L.

• Book ID: 104126135
• Publisher: Elsevier Science
• Year: 1925
• Tongue: English
• Weight: 129 KB
• Volume: 199
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/s0016-0032(25)91243-4

✦ Synopsis

May, I925.] CURRENT TOPICS. 72I

applied to already well-tilled fields of research. A long time ago C16ment and~ D6sormes showed how to get the ratio of the specific heat of a gas at constant pressure to that at constant volume by studying the drop of pressure consequent upon the adiabatic expansion of the gas. It has been customary to use in this work huge volumes of gas reaching up to i3o litres. That veteran of calorimetric measurement, H. L. Callendar, suggested that much smaller volumes could be employed and proved his contention by the results of his experiments. In the paper under review volumes of gas ranging from 700 c.c. down to 35 c.c. are used. It can readily be understood that the small size of the containing vessels greatly facilitated the carrying out of expansions in the vicinity of -18o ° C.

Temperatures were got from a resistance thermometer consisting chiefly of 6 cm. of platinum wire .025 ram. in diameter. When air at 155.231° abs. expanded from a pressure of 80.87 cm. of