Introduction to General Chemistry: An Exposition of the Principles of Modern Chemistry

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P. Blakiston's son & Company, 1920 - Chemistry - 195 pages
 

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Page 146 - WHEN A FACTOR DETERMINING THE EQUILIBRIUM OF THE SYSTEM IS ALTERED, THE SYSTEM TENDS TO CHANGE IN SUCH A WAY AS TO OPPOSE AND PARTIALLY ANNUL THE ALTERATION IN THE FACTOR. THE SAME IDEA IS CONVEYED BY SAYING THAT EVERY SYSTEM IN EQUILIBRIUM IS CONSERVATIVE, OR TENDS TO REMAIN UNCHANGED.
Page 74 - In the case of a given substance, the depression of the freezing point, that is, the difference between the freezing point of the pure solvent and that of the solution, is proportional to the concentration of the solution.
Page 36 - Stated in words, the so-called periodic law is that the physical and chemical properties of the elements are periodic functions of their atomic weights.
Page 92 - ... method, also employed in the present work, is to vary the depth and concentration in such a manner that the total number of ions, or the total number of undissociated molecules in the path of the beam of light remains constant. This is easily done as follows: Let the concentration be denoted by c, the ratio of the number of dissociated molecules to the total number put into solution by x, the depth of solution used by d; the number of ions in a cubic centimeter of the solution is then proportional...
Page 12 - Thus we say, that water is composed of 8 parts by weight of oxygen, and 1 part by weight of hydrogen.
Page 50 - Anode. B- -Assistant Anode. C— Cathode. D — Regulating Chamber. F — Regulating Adjuster. G — Hemisphere. H — Connection Wire. I — Assistant Anode Cap. K — Anode Cap. L — Cathode Cap. M— Cathode Stream. N— Focal Point. Fig. 11. — Diagram of a Rttntgen Tube, (By courtesy of the Scheldel-Western X-ray Coll Co.) upon it through the concavity of the cathode mirror..
Page 79 - This lag is the difference between the boiling point of the solution and that of pure water and tends to increase as the concentration proceeds.
Page 37 - IV and either fall again to one or increase to seven in Group VII. Thus elements of Groups V, VI and VII may exhibit two valencies which total to eight.
Page 146 - ... alteration in the factor. The same idea is conveyed by saying that every system in equilibrium is conservative, or tends to remain unchanged. That is, considering a physical or chemical system in equilibrium, the equilibrium being fixed by the nature of the system and conditions such as temperature and pressure, the principle states that if we alter one of these conditions or parameters, say the temperature, the system will change in such a direction as to tend to annul this change in temperature.
Page vi - I have endeavored to render the text into standard English, and thus make it available to a wider group of readers, to whom it will be a valuable guide. Those who, like myself, began the study of chemistry just after the middle of the last century, will find many points of difference between this book and...

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