Treść zadania

Rozwiązania

• 

  2 0

  ewka13 29.9.2013 (15:10)

  a)
  2Na + H_{2}SO_{3} \to Na_{2}SO_{3} + H_{2}\uparrow
  
  Na_{2}O + H_{2}SO_{3} \to Na_{2}SO_{3} + H_{2}O
  
  2NaOH + H_{2}SO_{3} \to Na_{2}SO_{3} + 2H_{2}O
  
  Na_{2}O + SO_{2} \to Na_{2}SO_{3}
  
  b)
  Zn + 2HCl \to ZnCl_{2} + H_{2}\uparrow
  
  ZnO + 2HCl \to ZnCl_{2} + H_{2}O
  
  Zn(OH)_{2} + 2HCl \to ZnCl_{2} + 2H_{2}O
  
  Zn + Cl_{2} \to ZnCl_{2}
  
  ZnCO_{3} + 2HCl \to ZnCl_{2} + H_{2}O + CO_{2}\uparrow
  
  c)
  3Ca+ 2H_{3}PO_{4} \to Ca_{3}(PO_{4})_{2} + 3H_{2}\uparrow
  
  3CaO + 2H_{3}PO_{4} \to Ca_{3}(PO_{4})_{2} + 3H_{2}O
  
  3Ca(OH)_{2} + 2H_{3}PO_{4} \to Ca_{3}(PO_{4})_{2} + 6H_{2}O
  
  3CaO + P_{2}O_{5} \to Ca_{3}(PO_{4})_{2}
  
  d)
  bromek żelaza(II)
  
  Fe + 2HBr \to FeBr_{2} + H_{2}\uparrow
  
  FeO + 2HBr \to FeBr_{2} + H_{2}O
  
  Fe(OH)_{2} + 2HBr \to FeBr_{2} + 2H_{2}O
  
  Fe + Br_{2} \to FeBr_{2}
  
  FeCO_{3} + 2HBr \to FeBr_{2} + H_{2}O + CO_{2}\uparrow
  
  e)
  Mg + H_{2}SO_{4} \to MgSO_{4} + H_{2}\uparrow
  
  MgO + H_{2}SO_{4} \to MgSO_{4} + H_{2}O
  
  Mg(OH)_{2} + H_{2}SO_{4} \to MgSO_{4} + 2H_{2}O
  
  MgO + SO_{3} \to MgSO_{4}
  
  f)
  2Na + H_{2}CO_{3} \to Na_{2}CO_{3} + H_{2}\uparrow
  
  Na_{2}O + H_{2}CO_{3} \to Na_{2}CO_{3} + H_{2}O
  
  2NaOH + H_{2}CO_{3} \to Na_{2}CO_{3} + 2H_{2}O
  
  Na_{2}O + CO_{2} \to Na_{2}CO_{3} .

  Dodawanie komentarzy zablokowane - Zgłoś nadużycie