William H. Ukers (author)
determine phosphoric acid (P_2_O_5)
judge verdicts (2)
- groundedness 1.00 pass — The claim is directly stated in the passage. The opening sentence explicitly instructs to 'Acidify the solution of soluble ash, obtained in 9, with dilute nitric acid and determine phosphoric acid (P_2_O_5),' which precisely matches the subject-predicate-object relationship described in the claim.
- qualifier_fidelity 0.85 pass — The claim is largely faithful to the passage. Viewpoint, stance, and sentiment are all appropriate - the passage presents this as procedural instruction (asserting what should be done) in neutral tone. Time qualifiers are correctly null. Context is appropriately empty as the passage does not restrict this to a specific sense or role. The quote appears verbatim in the passage's first sentence. Minor deduction (0.15): The claim states the acid should be determined "from acidified soluble ash solution," but the passage more precisely specifies it should be determined from "the solution of soluble ash" *after* acidification with dilute nitric acid - a slight simplification of the procedural sequence, though not materially unfaithful to the overall instruction.
Determine phosphoric acid (P_2_O_5) in the Insoluble ash
judge verdicts (2)
- groundedness 1.00 pass — The claim is directly stated in the passage under section 12, which explicitly states 'Determine phosphoric acid (P_2_O_5) in the Insoluble ash by the foregoing method.' The claim accurately reflects this instruction without any rewording or generalization.
- qualifier_fidelity 1.00 pass — All qualifiers are faithful to the passage. The viewpoint is correctly attributed to the author (as indicated by the official procedure text). The stance is correctly marked as 'asserts' - the passage prescriptively states what should be done. Sentiment is neutral, which matches the technical, instructional tone. Time qualifiers are appropriately null as the passage provides no temporal information. Context is empty, which is correct as the passage does not restrict the claim to a particular sense or role. The quote 'Determine phosphoric acid (P_2_O_5) in the Insoluble ash' appears verbatim in section 12 and directly supports the claim.