Question

If hydrogen peroxide is stored in a clear glass bottle and is left to stand, it decomposes into water and oxygen.Which of the following correctly shows the balanced equation for this decomposition?

1. 2HO2-------------> 2HO + O
2. 2H2O2--------------> 2H2O + O2
3. 2H2O-----------------> 2H2O + O2
4. H2O2----------------> H2O + O

Help pls

Answer 1

2. 2H2O2 -> 2H2O+ O2

Step-by-step explanation:

This equation is balanced because there are equal amounts of each element on each side. 4 Hydrogen on the left, 4 On the Right. 4 Oxygen on the Left, 4 on the right.

Although 1 is balanced it is not the Chemical equation for hydrogen peroxide (H2O2)

2. is not the equation for Hydrogen Peroxide

4. Balanced although this one does not show oxygen as a gas ( when oxygen is a gas it is O2)