The balanced chemical equation for the reaction between H2O and CO2 is:
H2O + CO2 -> H2CO3
From the balanced equation, we can see that one mole of CO2 reacts with one mole of H2O to produce one mole of H2CO3. Therefore, the number of moles of CO2 produced will be equal to the number of moles of H2O reacted.
So, if 3.1127 moles of H2O are reacted, then 3.1127 moles of CO2 will be produced.