By Bernard Jaffe
Read or Download Crucibles: The Story of Chemistry - From Ancient Alchemy to Nuclear Fission PDF
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Additional resources for Crucibles: The Story of Chemistry - From Ancient Alchemy to Nuclear Fission
It was not very soluble, but some of it did mix with the water. " Appearing before the Royal Society he told that learned now know body of his discovery of what we soda water a very weak acid solution of carbon dioxide gas in water. The Royal Society was intensely interested, and he was asked to repeat his experiments before the members of the College of Physicians. He jumped at the opporhe asked some tunity, and as he bubbled the gas through water, as CRUCIBLES: 36 THE STORY OF CHEMISTRY of those present to taste the solution.
He was tempted but, fortunately, another clergyman objected to HTTI because of his religious principles. He stayed behind, and continued the great experiment that was to bring him lasting fame. Priestley's experiments with the different kinds of gases or airs, as he called them, had made him very proficient in the preparation and collection of these elastic fluids. Until his time, the various gases had been studied by collecting them first in balloonlike bladders. This was a method, and besides, clumsy the bladders were not transparent.
He, too, set fire to hydrogen in common air, and as the gas burned he placed a white porcelain saucer in the flame of the inflammable gas. " Cavendish heard from his friend Priestley, working away in his laboratory in Birmingham. On April 18, 1781, this preacher-scientist, using the spark of an electric machine, fired a mixture of common air and hydrogen in a closed thick glass vessel. " Cavendish's susbecame more and more confirmed. The facts seemed to be as clear as daylight. He went to his bottles and his bladders, his gases and his electrical machine to probe a great secret.