Chemistry - Redox Reactions Question with Solution | TestHub

{"root":{"type":"root","format":"","indent":0,"version":1,"children":[{"type":"paragraph","format":"","indent":0,"version":1,"children":[{"mode":"normal","text":"A forensic chemist needed to determine the concentration of ","type":"text","style":"","detail":0,"format":0,"version":1},{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\mathrm{HCN}"},{"mode":"normal","text":" in the blood of a suspected poisoning victim and titrated a dilute blood sample with iodine: ","type":"text","style":"","detail":0,"format":0,"version":1},{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\mathrm{HCN(aq)}"},{"mode":"normal","text":" + ","type":"text","style":"","detail":0,"format":0,"version":1},{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\mathrm{I_{3}^{-}(aq)}"},{"mode":"normal","text":" ","type":"text","style":"","detail":0,"format":0,"version":1},{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\rightarrow "},{"mode":"normal","text":" ","type":"text","style":"","detail":0,"format":0,"version":1},{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\mathrm{ICN(aq)}"},{"mode":"normal","text":" + ","type":"text","style":"","detail":0,"format":0,"version":1},{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\mathrm{2I^{-}(aq)}"},{"mode":"normal","text":" + ","type":"text","style":"","detail":0,"format":0,"version":1},{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\mathrm{H^{+}(aq)}"},{"mode":"normal","text":". A diluted blood sample of volume 20.0 ml was titrated to the stoichiometric point with 5.0 ml of an ","type":"text","style":"","detail":0,"format":0,"version":1},{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\mathrm{I_{3}^{-}}"},{"mode":"normal","text":" solution. The ","type":"text","style":"","detail":0,"format":0,"version":1},{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\mathrm{I_{3}^{-}}"},{"mode":"normal","text":" solution was standardized against ","type":"text","style":"","detail":0,"format":0,"version":1},{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\mathrm{As_{4}O_{6}}"},{"mode":"normal","text":", which in solution forms ","type":"text","style":"","detail":0,"format":0,"version":1},{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\mathrm{H_{3}AsO_{3}}"},{"mode":"normal","text":": 20.0 ml of the triiodide solution was needed for a 0.2376 g sample of ","type":"text","style":"","detail":0,"format":0,"version":1},{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\mathrm{As_{4}O_{6}}"},{"mode":"normal","text":" in the reaction: ","type":"text","style":"","detail":0,"format":0,"version":1},{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\mathrm{H_{3}AsO_{3}(aq)}"},{"mode":"normal","text":" + ","type":"text","style":"","detail":0,"format":0,"version":1},{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\mathrm{I_{3}^{-}(aq)}"},{"mode":"normal","text":" + ","type":"text","style":"","detail":0,"format":0,"version":1},{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\mathrm{H_{2}O(l)}"},{"mode":"normal","text":" ","type":"text","style":"","detail":0,"format":0,"version":1},{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\rightarrow "},{"mode":"normal","text":" ","type":"text","style":"","detail":0,"format":0,"version":1},{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\mathrm{H_{3}AsO_{4}(aq)}"},{"mode":"normal","text":" + ","type":"text","style":"","detail":0,"format":0,"version":1},{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\mathrm{3I^{-}(aq)}"},{"mode":"normal","text":" + ","type":"text","style":"","detail":0,"format":0,"version":1},{"type":"equation","format":"latex","inline":true,"version":1,"equation":"\\mathrm{2H^{+}(aq)}"},{"mode":"normal","text":". (Atomic mass of As = 75)","type":"text","style":"","detail":0,"format":0,"version":1}],"direction":"ltr","textFormat":0}],"direction":"ltr"}}