Izvestiya of Saratov University.
Chemistry. Biology. Ecology
ISSN 1816-9775 (Print)
ISSN 2541-8971 (Online)

Химия

ИЗУЧЕНИЕ УСЛОВИЙ ПОЛУЧЕНИЯ МОЛИБДАТА ЖЕЛЕЗА (III) ПРИ ТВЕРДОФАЗНОМ СИНТЕЗЕ

В работе представлен новый расчетно-экспериментальный материал по изучению твердофазного взаимодействия реагентов в системе Fe2(SO4)3 - Na2CO3 - МоO3 методами термодинамики, физико-химического анализа и химической кинетики в широком интервале температур при стехиометрическом отношении реагирующих веществ.

Elective Courses and Creative Projects in Chemistry at the Modern School

Elective courses are obligatory for visiting courses at pupils’ option, included in a profile training at the senior stage of a school.

Phase Separation in Polymeric Systems

The incorrectness of plotting the binodal (for the binary system monomolecular polymer + low-molecular-weight liquid) or phase separation boundary (that with a polynolecular polymer) by means of fixing a certain turbidity level at the configurative point’s movement from the single-phase range towards the phase separation one is discussed.

Analysis of Alkylmalonic Acid – Rare Earth Metal Complex Formation

The process of rare earth metal – alkylmalonic acid complex formation was established by potentiometric method. The evaluated complex stability constants were used to calculate the thermodynamic functions of the complex formation process.

Analysis of Alkylmalonic Acid – Rare Earth Metal Complex Formation

The process of rare earth metal – alkylmalonic acid complex formation was established by potentiometric method. The evaluated complex stability constants were used to calculate the thermodynamic functions of the complex formation process.

Phase Equilibria in Potassium Iodide – Water – Alcohol Systems at 25°C

The solubility of potassium iodide in the mixed solvent water – tretbutyl alcohol (tret-C₄H₉OH) was studied by means of the sections method at 25°C under atmospheric pressure. The phase diagram of the KI – H₂O – tret-C₄H₉OH system has been plotted and discussed. The system is classified as that with salting-out.

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