Rubidium Scandium Selenates

5 Rubidium Rare Earth Selenates Rubidium Scandium Selenates 

The thermal decomposition was studied by TG and DTA in a quartz vessel at 5 K/min heating rate from 25 to 1000°C. The resulting solid phases were identified by chemical and X-ray diffraction analyses as well as by IR spectroscopy from 400 to 4000 cm T There is one endothermic effect at 630 to 735°C, which corresponds to decomposition by the scheme  

The behavior of Rb8c(8e04)2 in aqueous solution was studied by measuring the molar conductance A (in cm -Q mol ) and the pH at 25°C and various dilutions V in L/mol  

The conductance is higher than that for two-ion electrolytes, apparently because of the low stability of the anion. Comparison is made with the sulfate, which has lower conductance [1]. 

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