Question

What set of coefficients, respectively, balance this equation? H2O2 → H2O + O2 A) 1 → 1,2 B) 2 → 2,1 C) 2 → 2,2 D) 4 → 4,1

Answer 1

The correct answer is c) 2,2

Answer 2

Answer: C) 2,2

Explanation: In the product H2O2, there are 2 hydrogen atoms and 2 oxygen atoms. H2O has two hydrogen atoms, but not oxygen atoms. So to balance the equation we add the coefficient 2 in front of H2O. Then we also have to add a coefficient 2 in front of H2O2 in order to balance it out.

Hope this helps :)