{"id":"S89004434","label":"Acid-base chemistry","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh89004434","normalized_label":"acid-base chemistry","broader":["http://id.loc.gov/authorities/subjects/sh85023027"],"aliases":["Acid-base concepts","Acid-base theories","Base-acid chemistry","Base-acid concepts","Base-acid theories","Chemistry, Acid-base"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh89004434","provider":"lcsh","revision":"9ead37a5fb2f826c","taxonomy_revision":"f050b5d4780b1289","title":"Acid-base chemistry","url":"/topics/S89004434","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"595812157023716930","address_version":"morton4x16-v1","coordinates":[0,21,14438,18432],"answer_status":"Directory metadata; local answer requires separate source review","truth_status":"Subject descriptor, not a factual answer or a demonstrated knowledge gap","reviewed_answer":null}