Use the unbalanced chemical equation to answer the question.

Question

2NaHCO3 → Na2CO3 + CO2

Which of the following can be added to the products to balance the equation?

H^2O
H^2
O^2
CH^2OH

Answer 1

I think its H^2

Answer 2

I don't think so. What about H2O?
NaHCO3.......NaHCO3
Take out two Na and a CO3. Left with H,H, CO3 which H2O and CO2 come from that.

Answer 3

H2O