Assertion: nitrogen dioxide's gas | /r/HasProperty | prepared in the laboratory
Facets:
value: by reducing sulfuric acid
type: MANNER
Source sentences:
text: In the laboratory the gas may be prepared by reducing sulfuric acid (H 2 SO 4 ) to sulfurous acid (H 2 SO 3 ), which decomposes into water and sulfur dioxide, or by treating sulfites (salts of sulfurous acid) with strong acids, such as hydrochloric acid, again forming sulfurous acid.
text: In the laboratory the gas may be prepared by reducing sulfuric acid (H 2 SO 4 ) to sulfurous acid (H 2 SO 3 ), which decomposes into water and sulfur dioxide, or by treating sulfites (salts of sulfurous acid) with strong acids, such as hydrochloric acid, again forming sulfurous acid.