Testes de Precipitato e Litmus
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Questions and Answers

Cu2+ ppt se forma quando in presencia de?

  • Silver nitrate
  • Sodium hydroxide (correct)
  • Barium chloride
  • Potassium iodide
  • Fe2+ forma un precipitate de quale color quando in contacto con sodio hydroxide?

  • Blue
  • Brown
  • Green (correct)
  • Yellow
  • Quale precipitate forma Fe3+ when addes sodio hydroxide?

  • Brown (correct)
  • Blue
  • Green
  • White
  • Le precipitate bright yellow se forma con Pb2+ e quale reagen?

    <p>Potassium iodide</p> Signup and view all the answers

    Le precipitate white se forma quando Cl- interacte con quale reagen?

    <p>Silver nitrate</p> Signup and view all the answers

    Le precipitate cream se genera quando Br- es addite a quale reagen?

    <p>Silver nitrate</p> Signup and view all the answers

    Le precipitate pale yellow se forma con I- e quale reagen?

    <p>Silver nitrate</p> Signup and view all the answers

    Le ion SO4 2- resulta in un precipitate white quando in presenza de quale reagen?

    <p>Barium chloride</p> Signup and view all the answers

    Zn2+ produce qual color de precipitate in exceso de sodio hydroxide?

    <p>Colourless</p> Signup and view all the answers

    Al3+ ante un excess de sodio hydroxide resultara in qual effetto?

    <p>Colourless</p> Signup and view all the answers

    Ag+ resulta in un precipitate de quale color quando interacte con sodio hydroxide?

    <p>Brown</p> Signup and view all the answers

    Le precipitate white se forma con Ca2+ e quale reagen?

    <p>Sodium hydroxide</p> Signup and view all the answers

    OH- turn litmus paper blue.

    <p>True</p> Signup and view all the answers

    NH4+ turn red litmus paper blue when in contact with sodium hydroxide.

    <p>True</p> Signup and view all the answers

    CO3 2- turn limewater cloudy when react with _____

    <p>hydrochloric acid</p> Signup and view all the answers

    NO3- can turn red litmus paper blue when treated with sodium hydroxide and Devarda's alloy.

    <p>True</p> Signup and view all the answers

    Na+ produce qual color de flamma?

    <p>Yellow</p> Signup and view all the answers

    Li+ resulta in qual flamma?

    <p>Bright red</p> Signup and view all the answers

    K+ produce qual color de flamma?

    <p>Lilac</p> Signup and view all the answers

    Ca2+ produce qual flamma color?

    <p>Brick red</p> Signup and view all the answers

    Ba2+ produce qual color de flamma?

    <p>Apple green</p> Signup and view all the answers

    Cu2+ produce qual color de flamma?

    <p>Blue green</p> Signup and view all the answers

    V (+5) produce qual color?

    <p>Yellow</p> Signup and view all the answers

    V (+4) resulta in qual color?

    <p>Blue</p> Signup and view all the answers

    V (+3) resulta in qual color?

    <p>Green</p> Signup and view all the answers

    V (+2) resulta in qual colar?

    <p>Violet</p> Signup and view all the answers

    Study Notes

    Testes de Precipitato

    • Cu²⁺:

      • Hydroxido de sodio causa un precipitato blue.
    • Fe²⁺:

      • Hydroxido de sodio causa un precipitato verde.
    • Fe³⁺:

      • Hydroxido de sodio causa un precipitato marrone.
    • Pb²⁺:

      • Ioduro de potassio produce un precipitato jaune brillante.
    • Cl⁻:

      • Nitrato de argento forma un precipitato branco.
    • Br⁻:

      • Nitrato de argento causa un precipitato de crema.
    • I⁻:

      • Nitrato de argento forma un precipitato pale jaune.
    • SO₄²⁻:

      • Chloruro de bario produce un precipitato branco.
    • Zn²⁺:

      • Plus de hydroxido de sodio produce un solution colorless.
    • Al³⁺:

      • Plus de hydroxido de sodio resulta in un solution colorless.
    • Ag⁺:

      • Hydroxido de sodio produce un precipitato marrone.
    • Ca²⁺:

      • Hydroxido de sodio produce un precipitato branco.

    Litmus Testes e Indicatores

    • OH⁻:

      • Litmus paper deveni blue.
    • NH₄⁺:

      • Hydroxido de sodio cambia litmus paper red a blue.
    • CO₃²⁻:

      • Acido chlorhydric crea turbido in aqua de calce.
    • NO₃⁻:

      • Hydroxido de sodio e alloy de Devarda cambia litmus paper red a blue.

    Flamo Testes

    • Na⁺:

      • Produce un flamo jaune.
    • Li⁺:

      • Produce un flamo bright red.
    • K⁺:

      • Produce un flamo lilac.
    • Ca²⁺:

      • Produce un flamo brick red.
    • Ba²⁺:

      • Produce un flamo verde de pommo.
    • Cu²⁺:

      • Produce un flamo blue green.

    Stati de Vanadio

    • V (+5):

      • Presenta un color jaune.
    • V (+4):

      • Presenta un color blue.
    • V (+3):

      • Presenta un color verde.
    • V (+2):

      • Presenta un color violet.

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    Description

    Este quiz explora os diferentes testes de precipitato e as reações dos indicadores como o papel de litmus. Você aprenderá sobre a formação de precipitatos com diferentes íons e a resposta do papel de litmus em várias condições. Teste seu conhecimento sobre química com estas perguntas!

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