{
  "id": "165b12b9-0b29-59df-9581-b3e79fd3c698",
  "slug": "r3-2-electron-transfer-reactions-sl",
  "title": "R3.2 Electron transfer reactions (SL)",
  "course": "IB Chemistry",
  "level": "SL",
  "syllabusCode": "R3.2",
  "questionCount": 15,
  "page": "https://splycr.com/ib-chemistry/r3-2-electron-transfer-reactions-sl",
  "data": "https://splycr.com/library/r3-2-electron-transfer-reactions-sl.json",
  "play": "https://splycr.com/?set=165b12b9-0b29-59df-9581-b3e79fd3c698",
  "section": {
    "name": "Reactivity 3: What are the mechanisms of chemical change?",
    "page": "https://splycr.com/ib-chemistry/mechanisms-of-chemical-change"
  },
  "source": {
    "name": "Biology by Bradford",
    "href": "https://www.biologybybradford.com",
    "note": "Written for the splycr library by Biology by Bradford."
  },
  "questions": [
    {
      "number": 1,
      "question": "Loss of electrons by a species?",
      "answer": "Oxidation",
      "wrongOptions": [
        "Reduction",
        "Neutralisation",
        "Hydration"
      ]
    },
    {
      "number": 2,
      "question": "Oxidation state of manganese in KMnO₄?",
      "answer": "+7",
      "wrongOptions": [
        "+6",
        "+5",
        "−7"
      ]
    },
    {
      "number": 3,
      "question": "Oxidation state of sulfur in SO₄²⁻?",
      "answer": "+6",
      "wrongOptions": [
        "+4",
        "−2",
        "+8"
      ]
    },
    {
      "number": 4,
      "question": "Species that accepts electrons and so is itself reduced?",
      "answer": "Oxidising agent",
      "wrongOptions": [
        "Reducing agent",
        "Catalyst",
        "Electrolyte"
      ]
    },
    {
      "number": 5,
      "question": "Electrons transferred per zinc atom in Zn + Cu²⁺ → Zn²⁺ + Cu?",
      "answer": "2",
      "wrongOptions": [
        "1",
        "4",
        "0"
      ]
    },
    {
      "number": 6,
      "question": "Half-equation for the oxidation of iron(II) ions?",
      "answer": "Fe²⁺ → Fe³⁺ + e⁻",
      "wrongOptions": [
        "Fe²⁺ + e⁻ → Fe³⁺",
        "Fe³⁺ + e⁻ → Fe²⁺",
        "Fe²⁺ + 2e⁻ → Fe"
      ]
    },
    {
      "number": 7,
      "question": "Gas formed when magnesium reacts with dilute hydrochloric acid?",
      "answer": "Hydrogen",
      "wrongOptions": [
        "Chlorine",
        "Oxygen",
        "Carbon dioxide"
      ]
    },
    {
      "number": 8,
      "question": "Electrode at which oxidation occurs?",
      "answer": "Anode",
      "wrongOptions": [
        "Cathode",
        "Salt bridge",
        "Electrolyte"
      ]
    },
    {
      "number": 9,
      "question": "In a primary (voltaic) cell, electrons flow through the external circuit from…?",
      "answer": "Anode to cathode",
      "wrongOptions": [
        "Cathode to anode",
        "Anode to salt bridge",
        "Cathode to salt bridge"
      ]
    },
    {
      "number": 10,
      "question": "Component that lets ions move between the two half-cells?",
      "answer": "Salt bridge",
      "wrongOptions": [
        "Wire",
        "Voltmeter",
        "Electrode"
      ]
    },
    {
      "number": 11,
      "question": "Rechargeable cell, such as a lithium-ion battery?",
      "answer": "Secondary cell",
      "wrongOptions": [
        "Primary cell",
        "Fuel cell",
        "Electrolytic cell"
      ]
    },
    {
      "number": 12,
      "question": "Product at the cathode in the electrolysis of molten NaCl?",
      "answer": "Sodium",
      "wrongOptions": [
        "Chlorine",
        "Hydrogen",
        "Oxygen"
      ]
    },
    {
      "number": 13,
      "question": "Product of heating ethanol under reflux with excess acidified K₂Cr₂O₇?",
      "answer": "Ethanoic acid",
      "wrongOptions": [
        "Ethanal",
        "Ethene",
        "Ethane"
      ]
    },
    {
      "number": 14,
      "question": "Product of oxidising propan-2-ol with acidified K₂Cr₂O₇?",
      "answer": "Propanone",
      "wrongOptions": [
        "Propanal",
        "Propanoic acid",
        "Propene"
      ]
    },
    {
      "number": 15,
      "question": "Colour change of acidified dichromate(VI) as it oxidises an alcohol?",
      "answer": "Orange to green",
      "wrongOptions": [
        "Green to orange",
        "Purple to colourless",
        "Colourless to orange"
      ]
    }
  ]
}