Solubility and Phase Equilibrium of Na+, Mn++/ H2PO2-, Cl-//H2O Ternary System at 323K

Öz

In this study, the density and phase changes of Mn(H2PO2)2 and NaCl in aqueous medium were investigated. All experiments were carried out under atmospheric pressure. It was observed that the studied ternary system was in accordance with the simple eutonic point system, that is, a certain ratio of the component in the mixture system, the components solidify together at the point where the system has the lowest freezing point and there is a phase change at a single temperature and it does not contain any binary salt. The solubility and density values of the Mn(H2PO2)2-H2O and NaCl-H2O binary systems, which are subsystems of the H2O- Mn(H2PO2)2-NaCl system, were determined as 11.14 % Mn(H2PO2)2 and 26.86 % NaCl, 1067 kg/m3 and 1189 kg/m3 at 323 K, respectively. The eutonic point composition of the composition was determined to contain 24.46% NaCl and 6.02 % Mn(H2PO2)2 and its density was determined to be 1279 kg/m3.

Anahtar Kelimeler

• Hypophosphite
• Density
• phase equilibria
• solubility
• Eutonic point

Na+, Mn++/ H2PO2-, Cl-//H2O Üçlü Sisteminin 323K’de Çözünürlük ve Faz Dengeleri

Öz

Bu çalışmada, Mn(H2PO2)2 ve NaCl’ün sulu ortamda yoğunluk ve faz dengesi üzerine değerlendirilmesi araştırılmıştır. Tüm deneyler atmosferik basıncı altında gerçekleştirildi. Çalışılan üçlü sistemin basit ötonik nokta sistemine uygun yani karışım sisteminde bileşenin belirli bir oranı, sistemin en düşük donma noktasına sahip olduğu noktada bileşenler birlikte katılaşır ve tek bir sıcaklıkta faz değişimi olduğu ve herhangi bir ikili tuz barındırmadığı görülmüştür. H2O- Mn(H2PO2)2-NaCl sisteminin alt sistemleri olan Mn(H2PO2)2-H2O ve NaCl-H2O ikili sistemlerinin çözünürlük ve yoğunluk değerleri 323 K'de sırasıyla %11,14 Mn(H2PO2)2 ve %26.86 NaCl, 1067 kg/m3 ve 1189 kg/m3 olarak tespit edildi. Bileşimin ötonik nokta bileşimi ise % 24.46 NaCl ve % 6.02 Mn(H2PO2)2 içerdiği ve yoğunluğunun 1279 kg/m3 olduğu tespit edilmiştir.

Anahtar Kelimeler

• Hipofosfit
• Yoğunluk
• Faz dengesi
• Çözünürlük
• Ötonik nokta

Kaynakça

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