各種砒酸塩の熱分解平衡蒸気圧の測定 (第1報)
1980 年 96 巻 1111 号 p. 623-628,646
詳細
1980 年 96 巻 1111 号 p. 623-628,646
The equilibrium vapour pressure of each synthesizeda rsenate, AlAsO4, As2O5, Co3As2O8, Co2As2O7, CoAs2O6, CrAsO4, FeAsO4, Ni3As2O8 and Ni2As2O7 has been measured by the transpiration method. For example, AlAsO4 is assumed to decompose as the following equation.
2AlAsO4(s) → Al2O3(s) + 1/2As4O6(g) + O2(g)
When this reaction occurs in the innert gas, 2PAs4O6 is equal to PO2. Therefore, the equilibrium constant Kp can be estimated by measuring the equilibrium pressure of As4O6 gas. Authors determined the Kp of the decomposition reaction of each arsenate mentioned above, and represented logKp as a function of 1/T.
