Inorganic Chemistry Reactions
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Questions and Answers

What forms when hot centrifugate is cooled?

  • PbI₂
  • PbSO₄
  • PbCl₂ (correct)
  • PbCrO₄

    • What precipitate forms when a hot solution of Pb²⁺ is combined with K₂CrO₄ solution and dil. acetic acid?

  • Orange ppt. of PbCl₂
  • Yellow ppt. of PbCrO₄ (correct)
  • White ppt. of PbI₂
  • Yellow ppt. of PbSO₄

    • Why is PbCrO₄ precipitate soluble in dilute mineral acids?

  • PbI₂ forms from PbCrO₄ and is soluble in hot water
  • CrO₄⁻² converts to Cr₂O₇⁻² forming soluble lead dichromate (correct)
  • PbSO₄ forms from PbCrO₄ and dissolves in acids
  • PbCrO₄ reacts with mineral acids to form soluble PbCl₂

    • What is observed when a hot solution of Pb²⁺ reacts with KI solution?

    <p>Yellow ppt. of PbI₂</p> Signup and view all the answers

    Which solution can dissolve PbSO₄ precipitate?

    <p>NaOH and ammonium acetate solution</p> Signup and view all the answers

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