III.Acidic nature: Sulphur dioxide, when dissolved in water, gives sulphurous acid because it is an acidic oxide. As a result, it turns blue litmus to red. \({\text{S}}{{\text{O}}_2} + {{\text{H}}_2}{\text{O}} \to {{\text{H}}_2}{\text{S}}{{\text{O}}_3}\) Fol...
The reducing nature of SO(2) in the alkaline medium is shown by the following equation. SO(2)+2OH^(-) harr SO(4)^(2-)+2H^(+)+2e^(-) The addition of acid (H^(+)) favours the reverse reaction. Therefore, sulphur dioxide fails to act as re
It was suggested that the desulfurization of 2-thiopyrimidine nucleosides 167 with N-sulfonyloxaziridine 33 proceeds via the initial formation of a sulfur oxyacid followed by subsequent decomposition to 168 and sulfur dioxide. This was confirmed by the experiment where, 2′,3′,5′-O-tribenzoyl-...
(by impregnation or residual ions from the preparation) were characterized with respect to their acidic properties (n-butylamine adsorption at 373 K, gravimetric method), basic properties (sulphur dioxide chemisorption at 373 K, volumetric method) and textural properties (surface area and pore size ...
(ii) an organic nitrogen-containing base reacted with the acidic group; and (b) an oil of lubricating viscosity. Throughout this application the term hydrocarbyl represents a univalent group of one or more carbon atoms that is predominately hydrocarbon in nature, but can contain heteroatoms su...
Therefore, the reactivity of aqueous NaOH or aq.KOH or of aq. Ca(OH)2 can vary depending upon the nature of the constituents present in coal ash. As low as 3.3% ash con- tent was obtained from the Tuncbilek lignite which was treated with 30% aq.NaOH followed by 10% HCl treat- ...
(O)C1-C4haloalkyl; or R2a and R2b are, independently from each other, C3-C6cycloalkyl which can be mono- or polysubstituted by substituents selected from the group consisting of halogen, cyano, C1-C4haloalkyl and C1-C4alkyl; R3 is hydrogen, halogen, cyano, nitro, C1-C6alkyl, C1-C6...
the reactivity of aqueous NaOH or aq.KOH or of aq. Ca(OH)2can vary depending upon the nature of the constituents present in coal ash. As low as 3.3% ash content was obtained from the Tuncbilek lignite which was treated with 30% aq.NaOH followed by 10% HCl treatment (Karaca and Yildi...
Compounds of formula (I) wherein the substituents are as defined in claim 1, and the agrochemically acceptable salts, stereoisomers, enantiomers, tautomers and N-oxides of th