12. Решение задачи по химии №001 287

3. In some system, the following reactions are possible:
1) H2O(g) C(cr)↔CO(g) H2(g)
2 H2O(g) C(cr)↔CO2(g) 2H2(g)
3) C(cr) CO2(g)↔2CO(g)
Is it possible for the following equilibrium systems to exist?
a) H2O,CO,CO2,C
b) H2,CO2,CO,Co,H2O,C
c) C,CO2,CO

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