Chimica industriale/Zolfo: differenze tra le versioni

Contenuto cancellato Contenuto aggiunto
Riga 19:
[[Concentration]]s ranged from 35%-40%, and after numerous refinements up to 78%. This is not a strong enough concentration for some industrial applications, and thus this method was eventually replaced by the [[contact process]].
 
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[[Category:Industrial processes]]
 
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SO<sub>2</sub> + 2HNO<sub>2</sub> --> H<sub>2</sub>SO<sub>4</sub> + 2NO<br>
 
===Processo a contatto===