Berilganlar orasidan o'rin olish reaksiyasini tanlang.

  1. N₂H₄ + H₂ →
  2. Ca(OH)₂ + CO₂ →
  3. NaCl + AgNO₃ →
  4. Na + H₂O →

📝 Detailed explanation

O'rin olish (zameщенie) reaksiyasi — oddiy va murakkab modda o'zaro reaksiyaga kirishib, yangi oddiy va murakkab modda hosil qiladi.
2Na + 2H₂O → 2NaOH + H₂↑ — bu o'rin olish reaksiyasi.
Ca(OH)₂ + CO₂ — birikish.
NaCl + AgNO₃ — almashinuv.
N₂H₄ + H₂ — birikish/qaytarilish.
Javob: Na + H₂O →.
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