cover image: Journal of the Indian Chemical Society  July  1934

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20.500.12592/9wtgw0

Journal of the Indian Chemical Society July 1934

1934

Really the equation d log k _Nhv dt RT508 W. V. BHAGWAT does not represent the variation of the velocity constant with teperature and k is not really the velocity constant of the chemical reaction but represents the variation in the number of molecules which are capable of retaining the absorbed energy of the frequency v with temperature. [...] The low percentage of cobalt obtained in the oxide prepared at low tempertures may thus be mainly due to (i) the adsorption of oxygen by the oxide when exposed to air and (ii) the occlusion of gases evolved during the decomposition of the carbonate (cf. [...] The density and the electrical resistance of the oxide increase and the solubility in sulphuric acid and the catalytic decomposition of hydrogen peroxide decrease as the temperature of preparation of the oxide is raised. [...] These o-azoaldehydes have afforded an opportunity of studing the azotriphenylmethane and azopyronine dyes containing azo and the triphenylcarbinol chromophores in ortho-positions to each other and also of comparing the effect of the two chromophores in the ortho-positions with their effect when occurring in the parpositions (Green and Sen J. Chem. [...] From a study of the various azotriphenylcarbinol and azopyrnine dyes prepared it has been observed that the introduction of an azo group in the ortho-position to the central carbon atom in trphenylcarbinol or pyronine dye is generally attended with an increase in the depth of colour much less than in the case of para-compounds and almost similar to that of meta-compounds.
technology medicine science
Pages
84
Published in
India
SARF Document ID
sarf.120026
Segment Pages Author Actions
Frontmatter
i-iv J.C. Ghosh, A.C. Sircar view
The Concept of Critical Increment and Radiation Hypothesis
507-510 W.V. Bhagwat view
A Note on the Benzoin-Benzil Change
511-512 K. Pandalai view
Behaviour of Cobaltous Oxide on Heating
513-516 Mata Prasad, S.M. Mehta, T.S. Suratkar view
Complex Compounds of Iridium. Part III. Compounds with Ammonia and Ethylamine
517-520 Prafulla Ray, Nadiabehari Adhikari view
Azotriphenylmethane and Azopyronine Dyes
521-528 Rajendra Sen, Sachindra Roy view
Condensation of Chloral and Bromal Hydrates with Amides
529-534 Andrew Meldrum, Gajanan Deodhar view
Derivatives of Hydroxybenzoic Acids
535-540 N. Hurry, A.N. Meldrum view
Antimony and Mercury Compounds of Quinoline and isoQuinoline
541-544 Rajendra Sen, Gopal Mukherjee view
Chloralides from a-Hydroxycarboxylic Acids and their Reduction Products
545-550 Narshinh Shah, Rupchand Alimchandani view
Derivatives of Salicylic Acid. Part VIII. Interaction of Thionyl Chloride with Esters of Hydroxy Aromatic Acids in Presence of Finely Divided Copper. Part III. Synthesis and Constitution of 3 :3'-Carbomethoxy-4 :4'-hydroxy- 5 :5'-methyldiphenyl Sulphide and its 6:6'-Methyl Analogue
551-554 N.W. Hirve, G.V. Jadhav, Y. Chakradeo view
Studies in the Coagulation of Colloids. Part VIII. The Viscosity Changes in Colloid Arsenious Sulphide when Coagulated by Binary Mixtures of Potassium Halides in the Slow Region
555-572 Shridhar Joshi, T.R. Iyengar view
Studies in the Coagulation of Colloids Part IX. The Effect of Stirring on the Time Variation of Viscosity of Colloid Arsenic and Antimony Sulphides when Coagulated by Simple Electrolytes in the Slow Region
573-578 Shridhar Joshi, T.R. Iyengar view
Backmatter
i-viii unknown view

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