from acidified soluble ash solution unspecified sense

William H. Ukers (author)

• phosphoric acid should be determined from acidified soluble ash solution
  assertsneutralsource: coffee-pg28500

  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.