This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1905 Excerpt: ...combustion--the oxides of carbon and hydrogen, and the unburnt carbon. The gaseous products may be collected by placing immediately over the flame an inverted funnel connected by tubing with a Woulfe's bottle containing the lime-water, or other reagent, through which it is intended to lead the gas, the other neck of ...
Read More
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1905 Excerpt: ...combustion--the oxides of carbon and hydrogen, and the unburnt carbon. The gaseous products may be collected by placing immediately over the flame an inverted funnel connected by tubing with a Woulfe's bottle containing the lime-water, or other reagent, through which it is intended to lead the gas, the other neck of the bottle being connected with an aspirator. 50. Refer to Exp. 25 for effect on lime water of the oxide of carbon. You suggested from Exps. 20 and 25 that the oxide of carbon was a colourless gas. Breathe through a tube into lime water. Effect 1 Inference? 51. Evaporate to dryness the water rendered milky by the breath. Weigh residue on platinum foil. Heat strongly on foil, cool in desiccator and weigh several times until the weight remains constant. What percentage of original weight has been lost 1 What has come of it 1 52. Take about '5 gm. of chalk on piece of platinum foil after drying in oven. Heat strongly, and weigh as above. Find percentage of loss, as before. 53. Can you suggest any method of determining whether the substance driven off by the heating in the two previous experiments is really oxide of carbon 1 Try it. Result I Inference 1 54. Is the substance left, after heating, chalk? Test it as regards its relative density, action with water, etc. 55. What other method than heating might drive off the gas I You have suggested treatment with water and an acid: try (cj) sulphuric acid; (b) hydrochloric acid. Result 1 56. Instead of using chalk use marble with hydrochloric acid. Result? 57. Collect several jars of the gas and examine its properties. (a) Test with taper. (b) Leave jar sitting for some time open, with mouth up; test with taper. (c) With mouth down; test with taper. Compare result of (b) and (c) with your observations on...
Read Less
Add this copy of Science in the School: a Course of Experimental Science to cart. $53.62, good condition, Sold by Bonita rated 4.0 out of 5 stars, ships from Newport Coast, CA, UNITED STATES, published 2016 by Palala Press.
