Question

What reaction would the chemical equation 2H₂O → 2H₂ + O₂ represent?

O combustion of water
O formation of water
O decomposition of water
O replacement of water

Answer 1

decomposition of water

Step-by-step explanation:

A combustion reaction involves carbon dioxide so it can't be that The water is not being formed The water is not replaced by the other molecules

So it is decomposition, not just from process of elimination, but also because decomposing water means heating it.