When it is gently warmed, Sodium thiosulphate pentahydrate loses its water of crystallization. Na2S2O3.5H2O is commonly called __ .
When it is gently warmed, Sodium thiosulphate pentahydrate loses its water of crystallization. Na2S2O3.5H2O is commonly called
Sodium thiosulfate pentahydrate, commonly called “hypo,” can easily be prepared by boiling sulfur in a solution of sodium sulfite:
Na2SO3(aq)+S(s)→Na2S2O3(aq)
Gentle warming causes the sodium thiosulfate pentahydrate to lose the water of crystallization in a reversible endothermic process:
Na2S2O3.5H2Owarm−−−→Na2S2O3(aq)+H2O ΔH=+55 Kj.mol−1
The equation is of considerable interest for a heat storage system. During the day, incident light from the Sun is absorbed by solar panels and transferred to an underground tank filled with hydrated Na2S2O3.5H2O. Due to the heat produced, the hydrate to decomposes and dissolves in the water produced. Later in the night, as the temperature cools, heat is released as the compound crystallizes.
Sodium thiosulfate pentahydrate, commonly called “hypo,” can easily be prepared by boiling sulfur in a solution of sodium sulfite:
Na2SO3(aq)+S(s)→Na2S2O3(aq)
Gentle warming causes the sodium thiosulfate pentahydrate to lose the water of crystallization in a reversible endothermic process:
Na2S2O3.5H2Owarm−−−→Na2S2O3(aq)+H2O ΔH=+55 Kj.mol−1
The equation is of considerable interest for a heat storage system. During the day, incident light from the Sun is absorbed by solar panels and transferred to an underground tank filled with hydrated Na2S2O3.5H2O. Due to the heat produced, the hydrate to decomposes and dissolves in the water produced. Later in the night, as the temperature cools, heat is released as the compound crystallizes.
