William H. Ukers (author)
- water-insoluble residue boiled with hydrochloric acid solution hydrochloric acid 5 minutes ⟨ash insoluble in acid procedure⟩
Boil the water-insoluble residue, obtained as directed under 9, or the total ash obtained as directed under 7, with 25 cc. of 10-percent hydrochloric acid (sp. gr. 1.050) for 5 minutes
judge verdicts (2)
- groundedness 1.00 pass — The claim is directly stated in the passage. Section 8 explicitly instructs to 'Boil the water-insoluble residue...with 25 cc. of 10-percent hydrochloric acid (sp. gr. 1.050) for 5 minutes,' which precisely matches the subject, predicate, object, and duration specified in the claim.
- qualifier_fidelity 0.90 pass — The claim is largely faithful to the passage. The viewpoint, stance, sentiment, time qualifier, context, and quote are all accurate and properly extracted from section 8. Minor deduction: the 'when' should more precisely represent the duration of the boiling action (5 minutes) rather than being framed as a temporal boundary; however, this is a reasonable interpretation of the procedure's time specification. All essential qualifiers faithfully represent the passage content.