Berilgan reaksiyalar zanjiri asosida noma’lum A moddaning nomini toping:
A →(t°) B + D
B + C(koks) → CaC₂ + CO
D + C(koks) → CO

CaCO₃ →(t°) CaO + CO₂; CaO + 3C → CaC₂ + CO; CO₂ + C → 2CO. Demak A – ohaktosh (CaCO₃).

29 / 30 (97%)

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