{
  "id": "9f07a902-6bfc-5ee5-9c95-6be7af495e7b",
  "slug": "r2-3-how-far-the-extent-of-chemical-change-hl",
  "title": "R2.3 How far? The extent of chemical change (HL)",
  "course": "IB Chemistry",
  "level": "HL",
  "syllabusCode": "R2.3",
  "questionCount": 13,
  "page": "https://splycr.com/ib-chemistry/r2-3-how-far-the-extent-of-chemical-change-hl",
  "data": "https://splycr.com/library/r2-3-how-far-the-extent-of-chemical-change-hl.json",
  "play": "https://splycr.com/?set=9f07a902-6bfc-5ee5-9c95-6be7af495e7b",
  "section": {
    "name": "Reactivity 2: How much, how fast and how far?",
    "page": "https://splycr.com/ib-chemistry/how-much-how-fast-and-how-far"
  },
  "source": {
    "name": "Biology by Bradford",
    "href": "https://www.biologybybradford.com",
    "note": "Written for the splycr library by Biology by Bradford."
  },
  "questions": [
    {
      "number": 1,
      "question": "Ratio with the same form as K but using non-equilibrium concentrations?",
      "answer": "Reaction quotient",
      "wrongOptions": [
        "Equilibrium constant",
        "Rate constant",
        "Partition coefficient"
      ]
    },
    {
      "number": 2,
      "question": "If Q < K, the reaction proceeds…?",
      "answer": "To the right",
      "wrongOptions": [
        "To the left",
        "Not at all",
        "Equally both ways"
      ]
    },
    {
      "number": 3,
      "question": "If Q = K, the system is…?",
      "answer": "At equilibrium",
      "wrongOptions": [
        "Moving forwards",
        "Moving backwards",
        "Complete"
      ]
    },
    {
      "number": 4,
      "question": "Kc for A ⇌ B with [A] = 0.20 and [B] = 0.80 mol dm⁻³ at equilibrium?",
      "answer": "4.0",
      "wrongOptions": [
        "0.25",
        "0.16",
        "1.0"
      ]
    },
    {
      "number": 5,
      "question": "Kc for H₂ + I₂ ⇌ 2HI with [H₂] = [I₂] = 0.10 and [HI] = 0.80 mol dm⁻³?",
      "answer": "64",
      "wrongOptions": [
        "8.0",
        "80",
        "0.016"
      ]
    },
    {
      "number": 6,
      "question": "1.00 mol of A in 1.00 dm³ forms 0.40 mol of B at equilibrium (A ⇌ B). Kc?",
      "answer": "0.67",
      "wrongOptions": [
        "0.40",
        "1.5",
        "0.60"
      ]
    },
    {
      "number": 7,
      "question": "For A ⇌ 2B, Kc = 0.50 and [A] = 2.0 mol dm⁻³ at equilibrium. [B]?",
      "answer": "1.0 mol dm⁻³",
      "wrongOptions": [
        "0.50 mol dm⁻³",
        "0.25 mol dm⁻³",
        "2.0 mol dm⁻³"
      ]
    },
    {
      "number": 8,
      "question": "K for A ⇌ B is 4.0. K for B ⇌ A?",
      "answer": "0.25",
      "wrongOptions": [
        "−4.0",
        "4.0",
        "16"
      ]
    },
    {
      "number": 9,
      "question": "K for A ⇌ B is 3.0. K for 2A ⇌ 2B?",
      "answer": "9.0",
      "wrongOptions": [
        "6.0",
        "3.0",
        "1.5"
      ]
    },
    {
      "number": 10,
      "question": "When K is very small, a reactant's equilibrium concentration is approximately its…?",
      "answer": "Initial concentration",
      "wrongOptions": [
        "Zero",
        "Half its initial value",
        "Product concentration"
      ]
    },
    {
      "number": 11,
      "question": "Equation linking ΔG⦵ to the equilibrium constant?",
      "answer": "ΔG⦵ = −RT ln K",
      "wrongOptions": [
        "ΔG⦵ = RT ln K",
        "ΔG⦵ = −RT log K",
        "ΔG⦵ = −R ln K/T"
      ]
    },
    {
      "number": 12,
      "question": "If ΔG⦵ for a reaction is negative, K is…?",
      "answer": "Greater than 1",
      "wrongOptions": [
        "Less than 1",
        "Equal to 1",
        "Negative"
      ]
    },
    {
      "number": 13,
      "question": "Value of K when ΔG⦵ = 0?",
      "answer": "1",
      "wrongOptions": [
        "0",
        "∞",
        "−1"
      ]
    }
  ]
}