Swaeligsuur: Verskil tussen weergawes

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Nuwe bladsy geskep met ''''Swaeligsuur''' ({{chem|H|2|S|O|3}}) vorm wanneer swaweldioksied water reageer: :: <math>SO_2 +H_2O \to H_2SO_3</math> == Kyk ook == * pH'
 
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Lyn 2:
 
:: <math>SO_2 +H_2O \to H_2SO_3</math>
 
::SO<sub>2</sub> + H<sub>2</sub>O {{eqm}} {{chem|HSO|3|−}} + H<sup>+</sup>{{spaces|10}}''K''<sub>a</sub> = 1.54{{e|−2}}; p''K''<sub>a</sub> = 1.81.
 
: [H–OSO<sub>2</sub>]<sup>−</sup> ⇌ [H–SO<sub>3</sub>]<sup>−</sup>
 
When trying to concentrate the solution by evaporation to produce waterless sulfurous acid it will decompose (reversing the forming reaction). In cooling down a [[clathrate]] SO<sub>2</sub> · 5.75 H<sub>2</sub>O will crystallise which decomposes again at 7 °C. Dus kan swaeligsuur H<sub>2</sub>SO<sub>3</sub> nie geïsoleer word nie.
 
== Kyk ook ==