WAEC - Chemistry (1991 - No. 23)

Which of the reactions represented by the following equations will take place at room temperature?
C 6 H2O → CO + H2
CuO + H2 → Cu + H2O
N2 + 3H2 → 2NH3
2Na + 2H2O → 2NaOH + H2
2Fe + 3CI2 → 2FeCI3

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