Assertion: cuprite | /r/HasProperty | leached with sulphuric acid
Facets:
value: in the absence of oxygen
type: TEMPORAL
Source sentences:
text: When cuprite is leached with sulphuric acid in the presence of excess atmospheric oxygen, approximately 100 per cent of the copper in pieces up to 4-mesh in size is converted into the soluble sulphate in 20 days at 35° C. With a minus 3 plus 4 mesh product, approximately 94 per cent is rendered soluble in the same time.
text: When cuprite is leached with sulphuric acid in the absence of oxygen (as, for example, in closed bottles in an atmosphere of m nitrogen) only one-half of the copper is rendered soluble, and one-half of it remains as metallic copper, according to the reaction: