Assertion: urea's use | /r/CapableOf | drive off excess nitric acid
Facets:
value: to consume the excess nitric
type: PURPOSE
Source sentences:
text: Please note that the use of excessive nitric acid is wasteful and requires either time consuming multiple evaporations of the acid to drive off the excess nitric acid or the use of urea to consume the excess nitric and drive it from the solution.