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Precipitation and Net Ionic Equations: Flashcards

Revise solubility rules, predicting precipitates, spectator ions and writing net ionic equations.

10 cardsIntermediate

10 cards

  1. Question
    What is a precipitate?
    Answer

    An insoluble solid that forms when two solutions are mixed.

  2. Question
    Which ionic compounds are always soluble?
    Answer

    Compounds of Group 1 ions and NH₄⁺, and all nitrates (and ethanoates).

  3. Question
    Which chlorides are insoluble?
    Answer

    AgCl and PbCl₂.

  4. Question
    Which sulfates are insoluble?
    Answer

    BaSO₄ and PbSO₄ (CaSO₄ only slightly soluble).

  5. Question
    Are carbonates and hydroxides usually soluble?
    Answer

    No: mostly insoluble, except with Group 1 ions and NH₄⁺ (Ba(OH)₂ is soluble).

  6. Question
    What is a spectator ion?
    Answer

    An ion present on both sides of the equation, unchanged: it does not take part in the reaction.

  7. Question
    Write the net ionic equation for AgNO₃(aq) + NaCl(aq).
    Answer

    AgX+(aq)+ClX−(aq)→AgCl(s)\ce{Ag+(aq) + Cl-(aq) -> AgCl(s)}

  8. Question
    Which compounds are split into ions in a complete ionic equation?
    Answer

    Only soluble (aq) ionic compounds, strong acids and strong bases. Solids, liquids and gases stay as formulas.

  9. Question
    What is the net ionic equation for a strong acid reacting with a strong base?
    Answer

    HX+(aq)+OHX−(aq)→HX2O(l)\ce{H+(aq) + OH-(aq) -> H2O(l)}

  10. Question
    What two things must balance in a net ionic equation?
    Answer

    Atoms and charge.