9.1 Qualitative Analysis: Tests for Ions

Cards (23)

  • What is the purpose of qualitative analysis?
    Identifying substances
  • Cations produce different flame colors in the flame test.

    True
  • What color flame does sodium produce in the flame test?
    Yellow
  • The flame test identifies cations based on the color they produce when heated in a flame.
    True
  • Carbonates produce effervescence when treated with acid
  • What gas is produced when chlorides react with acid?
    Hydrogen chloride
  • Wearing protective gear and handling glassware carefully are essential safety precautions in the lab.

    True
  • What is the primary purpose of following safety precautions and using proper laboratory techniques?
    Prevent accidents and ensure reliability
  • When using protective gear in the lab, it is important to ensure proper fit
  • Match the concept with its definition:
    Qualitative analysis ↔️ Identifying substances without quantity
    Quantitative analysis ↔️ Determining substance amounts
    Ion ↔️ Charged particle
  • What is one example of the importance of qualitative tests?
    Determine specific ion presence
  • The flame test for sodium (Na+) produces a yellow flame.
  • Match the anion with its qualitative test result:
    Carbonate (CO3^2-) ↔️ Effervescence
    Chloride (Cl-) ↔️ Pungent gas
    Sulfate (SO4^2-) ↔️ White precipitate
    Nitrate (NO3-) ↔️ Brown ring
  • In the lab, it is essential to wear goggles, lab coats, and gloves as protective gear.
  • Qualitative tests assist in environmental monitoring and pollution control
  • Match the cation with its flame color:
    Sodium (Na+) ↔️ Yellow
    Potassium (K+) ↔️ Lilac/violet
    Calcium (Ca2+) ↔️ Orange-red
    Copper (Cu2+) ↔️ Green-blue
    Iron (Fe2+/Fe3+) ↔️ Yellow-green
  • Glassware should be washed with strong soap and boiling water to ensure cleanliness.
    False
  • Steps to follow during a fire evacuation in the lab
    1️⃣ Know the location of emergency exits
    2️⃣ Follow established protocols
    3️⃣ Evacuate immediately
  • Qualitative analysis often involves observing reactions and color changes.
  • The flame test for cations produces the same color for all ions.
    False
  • What color does potassium (K+) produce in a flame test?
    Lilac/violet
  • Acid addition to carbonates results in effervescence.
    True
  • What observation indicates the presence of carbonate ions (CO3^2-) in a sample when acid is added?
    Effervescence (fizzing)