Electrical Conductance of Concentrated Aqueous Solutions of Copper Sulfate

Multicomponent Concentrated Aqueous Electrolyte Solutions

Chemistry: Rice and Kra Us Conductance and Viscosity of Concentrated Aqueous Salt Solutions

Fungi Capable of Growing in Strongly Acid Media and in Concentrated Copper Sulfate Solutions.

It is well established that the bacterium Thiobacillus thiooxidans is capable of growing in very strong mineral acid solutions and of producing, from elementary sulfur, sulfuric acid solutions more concentrated than 1 N and a reaction considerably below pH 1. This organism had been considered unique in its tolerance to acid until Starkey and Waksman (1943) demonstrated that certain fungi, Acont...

Component dynamics in polyvinylpyrrolidone concentrated aqueous solutions.

(2)H-nuclear magnetic resonance (NMR) and neutron scattering (NS) on isotopically labelled samples have been combined to investigate the structure and dynamics of polyvinylpyrrolidone (PVP) aqueous solutions (4 water molecules/monomeric unit). Neutron diffraction evidences the nanosegregation of polymer main-chains and water molecules leading to the presence of water clusters. NMR reveals the s...

Stability of Cefpirome Sulfate in Aqueous Solutions.

The influence of pH on the stability of cefpirome sulfate was investigated in the pH range of 0.44 - 13.00. The degradation of cefpirome sulfate as a result of hydrolysis was a pseudo-first-order reaction. General acid-base hydrolysis of cefpirome sulfate was not observed. In the solutions of hydrochloric acid, sodium hydroxide, acetate, borate and phosphate buffer, k(obs) = k(pH) because speci...