When gels containing carboxyl groups were titrated with HCl the calculated capacities were higher than when KOH was used as the titrant (constant KCI concentration). Conventional acid or base titration yielded capacities corresponding to the mean of those obtained with the frontal method. Similar ...
NaOH or KOH380Au, Ag, NiPowerful basic fluxes for silicates, silicon carbide, and certain minerals; main limitation: purity of reagents Na2O2DecomposesFe, NiPowerful basic oxidizing flux for sulphides; acid insoluble alloys of Fe, Ni, Cr, Mo, W and Li; platinum alloys, Cr, Sn, Zr mineral...
aWe suggest (see below) that KOH, a strong base, can confer a large negative charge through reactions with reactive hydroxyl, epoxy, and carboxylic acid groups on the graphene oxide sheets, resulting in reduced graphene oxide sheets that remain dispersed in water for at least 4 months 我们建议...
StrongAcid+StrongBase •Whatisthenetionicequation:HCl(aq)+NaOH(aq)1)H+(aq)+Cl-(aq)+Na+(aq)+OH-(aq)Cl-(aq)+Na+(aq)+H2O(aq)2)H+(aq)+OH-(aq)H2O(l)•AllstrongacidandstrongbasereactionshavethisasabasenetionicequationKOH(aq)+HNO3(aq)KNO3(aq)+H2O(l)K++OH-+H++NO3...
Balancetheremainingrxn.StrongAcid+StrongBase•Whatisthenetionicequation:HCl(aq)+NaOH(aq)1)H+(aq)+Cl-(aq)+Na+(aq)+OH-(aq) Cl-(aq)+Na+(aq)+H2O(aq)2)H+(aq)+OH-(aq) H2O(l)•AllstrongacidandstrongbasereactionshavethisasabasenetionicequationKOH(aq)+HNO3(aq) KNO3(aq)+H2O(l)K...
The synthesized moiety was further refluxed in alcoholic KOH with CS2 to form diazolethiol derivatives as shown in Scheme 2B. Further refluxing this compound with amine in ethanol gave triazolethiol as the end product [57]. Scheme 2A,B represented the protocols for the synthesis of derivatives ...
1.C6H5CH3+ KMnO4+H2O-C6H5 COOK+KOH+MnO2+H2O(water in fron of the manganese dioxide is supplied with water reaction environment) 2.C6H5 COOK+HCl--C6H5 COOH Drug and dosage: Toluene 1.5g (1.7ml, 0.016mol), potassium permanganate 5g (0.032mol), CTAB(cetyl trimethyl ammonium bromide) ...
acid value mg KOH/g min.175 iodine value 82 - 90 saponification value mg KOH/g 180 - 190 hydroxyl value 150 - 160 unsaponifiable matter max. 1 colour Gardner max. 7 Chemical PropertiesColorless to yellow, viscous liquid.Soluble in most organic solvents; insoluble in water. Com- bustible...
1 In one synthesis, methyl N-benzylpyroglutamate (58) was converted to the acyl hydrazide (201) by reaction with hydrazine, and subsequent treatment with KOH in carbon disulfide gave the oxadiazole-2-thione derivative, 202. When this reacted with iodomethane and then with potassium permanganate,...
(1991)patented a chemical process to obtain sucrose polyesters, which involved mixing the polyol with an alkaline catalyst such as KOH, NaOH, or their carbonates at temperatures above 100°C in aqueous solution, ketones, or C1-5alcohols. However, chemical methods are generally not selective and ...