Rhenium acid and its salt Perry acid

Rhenium acid Unlike manganic acid, it is not oxidizing. It is formed by the reaction of rhenium, hydrogen and perlite. Among them, potassium salts, especially rubidium and cesium, are difficult to dissolve in water. Sodium salts and divalent metals are easy to dissolve. The most soluble thallium salt. The following table The solubility of various perlites was compared.

If potassium or caustic potassium is used to eliminate hydrothermal potassium rhenate or potassium hydroxide, and potassium chlorate is added, it is released as fine crystalline precipitate. Potassium.

Kreo4 melts at 555 ° and does not decompose at 1370 ° in boiling water. The heat of formation of salt is 263 kcal. Salt dissolves little in water (4 Posts) The solubility is greatly reduced in front of the remaining potassium ions.

Rhenium acid and its salt Perry acid

Perrinato sodium nareo4 Unlike potash, sodium nacrate dissolves easily in water. Salt is hygroscopic)（ Nareo4 300 ° melting point.

Ammonium perchlorate NH4ReO4 is produced in the process of neutralizing salt in water solution with ammonium hydroxide. When heated, it will decompose and restart Re2O7, and the black residue of reo2 produced by partial reduction of Re2O7 with ammonia remains unchanged.

Calcium oxide and barium Ca (reo4) 2 and BA (reo4) 2 are produced when calcium oxide and barium are dissolved in rhenium acid. Salt dissolves in water.


 

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