Tungstic(VI) acid (H2WO4)-Powder introduce:
Tungstic acid refers to hydrated forms of tungsten trioxide, WO3. The solid-state structure of WO3·H2O consists of layers of octahedrally coordinated WO5(H2O) units where 4 vertices are shared. The dihydrate has the same layer structure with the extra H2O molecule intercalated.The monohydrate is a yellow solid and insoluble in water. The classical name for this acid is 'acid of wolfram'. Salts of tungstic acid are tungstates.
Molar mass:249.853 g/mol
Melting point:100 °C (212 °F; 373 K) (decomposes)
Boiling point:1,473 °C (2,683 °F; 1,746 K)
Solubility in water:insoluble
Solubility:soluble in HF, ammonia;slightly soluble in ethanol
Applied as flavoring agent and fragrance.
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