Treść zadania

Rozwiązania

• 

  0 0

  ewka13 14.12.2011 (08:58)

  Zad 1
  a)
  NaOH + HNO_{3} \to NaNO_{3} +H_{2}O
  
  Na^{+} + OH^{-} + H^{+} +NO_{3}^{-} \to Na^{+} + NO_{3}^{-} + H_{2}O
  
  H^{+} +OH^{-} \to H_{2}O
  
  2NaOH + H_{2}SO_{4} \to Na_{2}SO_{4} + 2H_{2}O
  
  2Na^{+} +2OH^{-} +2H^{+} +SO_{4}^{2-} \to 2Na^{+} +SO_{4}^{2-} + 2H_{2}O
  
  2H^{+} +2OH^{-} \to 2H_{2}O
  
  b)
  Ca(OH)_{2} + 2HCl \to CaCl_{2} + 2H_{2}O
  
  Ca^{2+} + 2OH^{-} + 2H^{+} +2Cl^{-} \to Ca^{2+} +2Cl^{-} + 2H_{2}O
  
  2H^{+} + 2OH^{-} \to 2H_{2}O
  
  Ca(OH)_{2} + 2HNO_{3} \to Ca(NO_{3})_{2} + 2H_{2}O
  
  Ca^{2+} +2OH^{-} + 2H^{+} +2NO_{3}^{-} \to Ca^{2+} +2NO_{3}^{-} + 2H_{2}O
  
  2H^{+} + 2OH^{-} \to 2H_{2}O
  
  Zad 2.
  a)
  AlCl_{3} + 3KOH \to \downarrow Al(OH)_{3} + 3KCl
  
  Al^{3+} +3Cl^{-} + 3K^{+} +3OH^{-} \to \downarrow Al(OH)_{3} + 3K^{+} + 3Cl^{-}
  
  Al^{3+} + 3OH^{-} \to \downarrow Al(OH)_{3}
  
  b)
  CuSO_{4} + Na_{2}S \to \downarrow CuS + Na_{2}SO_{4}
  
  Cu^{2+} +SO_{4}^{2-} + 2Na^{+} +S^{2-} \to \downarrow CuS + 2Na^{+} + SO_{4}^{2-}
  
  Cu^{2+} + S^{2-} \to \downarrow CuS
  
  c)
  AgNO_{3} + NaCl \to \downarrow AgCl + NaNO_{3}
  
  Ag^{+} +NO_{3}^{-} + Na^{+} + Cl^{-} \to \downarrow AgCl + Na^{+} +Cl^{-}
  
  Ag^{+} +Cl^{-} \to \downarrow AgCl.

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