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Why is sulphurous acid considered a weak acid while sulphuric acid is a strong acid?
Wiki User
∙ 12y ago
in sulphurous acid sulphur atom is surrounded by three oxygen atoms and has a lone pair of electrons so the electrons pairs of O-H bonds are not attracted towards sulphur and hydrogen can not be removed as H+ ion,the lone pair of sulphur is also responsible to attract the separated H+ ion,therefore the removal of H+ ion from sulphurous acid is not easy and it is a weak acid, in sulphuric acid sulphur is surrounded by four oxygen atoms and has no lone pair of electrons.
Wiki User
∙ 12y ago
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I consider that this preference is only illusory.
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What ionizes completely in solution and is considered to be a strong acid?
HClorHydrochloric acid
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