Assertion: sulfur's compound | /r/CapableOf | combine with water
Facets:
value: in a person’s mucous membranes
type: LOCATION
value: to form dilute sulfurous acid
type: PURPOSE
Source sentences:
text: The dioxide is the acid anhydride (a compound that combines with water to form an acid) of sulfurous acid; the trioxide is the acid anhydride of sulfuric acid.
text: This compound can combine with water in a person’s mucous membranes to form dilute sulfurous acid, H 2 SO 3 , which acts as a weak acid.