Complexometric Titration: Chapter 4

Complexometric Titration: Chapter 4

Explore complexometric titrations, a type of volumetric analysis where a colored complex is used to indicate the endpoint of a titration. Learn how to perform and interpret these titrations with accuracy.

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17 questions ready

Start with a quiz

Answer from memory first, then review the rationales and revisit weak areas from this set.

Activities

Quiz17 Questions
Flashcards15 Cards
Study Notes1 Note

List of Questions17 questions
  1. Question 1
    • An organic dye containing a chelating group to bond with a metal ion.
  2. Question 2
    • stable
  3. Question 3
    • pH = 7-11 (Blue)
    • pH < 7 (Red)
    • pH > 11 (Orange)
  4. Question 4
    • True
    • False
  5. Question 5
    • Ca²+ and Mg²+
  6. Question 6
    • Because Fe³⁺ and Ce⁴⁺ oxidize EBT.
  7. Question 7
  8. Question 8
    • Blue to Wine-red
    • Violet to Orange-red
    • Red to Violet
    • Yellow to Violet
  9. Question 9
    • True
    • False
  10. Question 10
    • Buffer solution (pH control), Masking agent, or Suitable indicator.
  11. Question 11
    • Zn²⁺, Cu²⁺, Fe²⁺, Cd²⁺, Ni²⁺, Co²⁺, Hg²⁺, Ag⁺.
  12. Question 12
    • Formaldehyde (HCHO) in acidic medium (HAC).
  13. Question 13
    • Back titration.
  14. Question 14
    • more
  15. Question 15
    • Determination of the hardness of water (Temporary and Permanent).
  16. Question 16
  17. Question 17
    • Sodium nitroprusside or diphenyl carbazone.
List of Flashcards15 flashcards
  1. Card 1
    HintChanges color when binding to a metal ion.Memory TipThink 'metal color' for metal-sensitive dyes.
  2. Card 2
    HintKF(M-Ind) < KF(M-EDTA)Memory TipIndicator must release metal to EDTA.
  3. Card 3
    HintColor change = metal ion interactionMemory TipColor indicates metal's binding status.
  4. Card 4
    HintColor change depends on pH.Memory TipEBT: Every buffer tints.
  5. Card 5
    HintpH = 10Memory TipMagnesium loves EBT until EDTA arrives.
  6. Card 6
    HintSelective for Calcium at high pH.Memory TipMurexide grabs calcium selectively at pH 12.
  7. Card 7
    HintCopper indicator for acidic pH.Memory TipPAN: Purple at first, then Copper's red.
  8. Card 8
    HintUsed in acidic environmentMemory TipAcid makes Xylenol Orange glow yellow.
  9. Card 9
    HintPrevents interference during titration.Memory TipMasking hides unwanted metals.
  10. Card 10
    HintRelease masked metal ions.Memory TipDemasking uncovers hidden metals.
  11. Card 11
    HintExcess EDTA, then titrate back.Memory TipUse back titration when direct titration is slow.
  12. Card 12
    HintForces metal to release from Mg-EDTA.Memory TipDisplacement: Metal swap with magnesium.
  13. Card 13
    HintAnalyte releases H+.Memory TipAlkalimetric: Acid release measures metal.
  14. Card 14
    HintSilver plus cyanide ppt.Memory TipLiebig: Lumps appear with cyanide.
  15. Card 15
    HintAnion + Hg(NO3)2Memory TipMercurimetric finds halides fast.