What does hydrogen peroxide H2O2 yield when it decomposes?
A. 1 molecule of water and 2 molecule of oxygen.
B. 2 molecules of water and 1 molecules of oxygen.
C. 2 molecules of water and 2 molecules of oxygen.
D. 3 molecules of water and 3 molecules of oxygen.
Peroxide means that it contains one more oxygen atom than normally. Two molecules of hydrogen peroxide decompose yielding two molecules of water and one molecule of oxygen.
2H2O2 --> 2H2O + O2.