Wells's principles and applications of chemistry; . ation of an intensely heated body, will cause instantaneous union,accompanied by an explosion. The product of such combination is alwayswater. In illustrating by experiment the explosive combination of oxygen and hy-drogen, the proportions which produce the best effect are 2 of hydrogen to 5of air, or 2 of hydrogen to 1 of oxygen. As the explosions are most violent,small quantities only of the mingled gases can be safely employed. The experiments may be varied by inflating a soap-bubble with the gas-eous mixture, and igniting it with a candle
Wells's principles and applications of chemistry; . ation of an intensely heated body, will cause instantaneous union,accompanied by an explosion. The product of such combination is alwayswater. In illustrating by experiment the explosive combination of oxygen and hy-drogen, the proportions which produce the best effect are 2 of hydrogen to 5of air, or 2 of hydrogen to 1 of oxygen. As the explosions are most violent,small quantities only of the mingled gases can be safely employed. The experiments may be varied by inflating a soap-bubble with the gas-eous mixture, and igniting it with a candle as it ascends; ^^^ ^^ or by blowing up a quantityof bubbles in a shallow dish,as is represented in Fig. 99;or by filling a bladder withthe mixed gases, and ignit-ing it from a distance bymeans of a candle fixed tothe end of a pole. What is called the hydrogen-gun consists of a strong tin tube, about aninch in diameter and eight inches in length, open at one end and providedwith a small vent hole at the other. In loading it, the vent is stopped by. QuEfSTiONS.—What are the peculiarities of the hydrogen flame? If a cold glass tum-bler be held over the jet, -what phenomenon is noticed? If hydrogen, before ignition, bemingled with air, what happens ? Will oxygen and hydrogen unite of their own accord ?What are the best explosive mixtures of oxygen and hydrogen ? How may the explosiveeffects of mixed hydrogen and oxygen be illustrated ? Explain the hydrogen-gun. HYDROGEN. 205 ?wax, the tube filled with water, and the proper mixture of gases introducedfrom a receiver under water. The tube thus filled is closed with a cork, andafterward fired at the vent. The explosion is suflBcient to expel the corkwith violence, and produce a loud report. The same experiment may bemore simply performed by inverting a vial, or test tube over a jet of hydro-gen, and allowing the escaping gas to mingle with, but not wholly displace theair. The mixture thus obtained may be exploded by applying flame
Size: 2370px × 1054px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1860, booksubjectchemistry, bookyear18
