What would be the reactant (s) of the following chemical reaction:

(all numbers should be smaller [subscripts])

H2O2 - - > H2O + O2

The reactants are always on the left side of the reaction. The hydrogen peroxide: H2O2

reactants - - > products

Hey there,

So reactants are the things that undergo change during the reaction and are on the right side of the chemical equation.

This means that they are the chemicals that get changed when they undergo a chemical reaction.

Here this equation means H2O2 undergoes a chemical reaction to get O2 and H20.

(This is the process when hydrogen peroxide decomposes to form water and oxygen)

So the chemical undergoing the reaction is the H2O2.

So ans: H2O2 or hydrogen peroxide