Which of the listed substances does water interact with: H2, C, CO2, Na2O, make up the equations of possible reactions.

H2 + H2O reaction does not proceed.
C + H2O = CO + H2.
CO2 + H2O = H2CO3.
Na2O + H2O = 2NaOH.
Reacts with others. (C, CO2, Na2O).

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