# Question #1a284

Apr 4, 2017

2 moles of hydrogen peroxide decomposes to produce 2 moles of water and 1 mole of oxygen gas.

#### Explanation:

This is a balanced equation: $2 {H}_{2} {O}_{2} \to 2 {H}_{2} O \left(l\right) + {O}_{2} \left(g\right)$

Since there is only one compound on the left side of the equation and two on the right side of the equation, this type of equation is called a decomposition equation.

The numbers in front of the chemical equation represent molecules. In order to balance the equation, according to the conservation of mass, both sides of the equation need to have the same number of atoms on both sides, 4 hydrogen atoms and 4 oxygen atoms.

The compound ${H}_{2} {O}_{2}$ is called dihydrogen dioxide. It's commonly called hydrogen peroxide.

The compound ${H}_{2} O$ is called dihydrogen monoxide. It is commonly called water.

The compound ${O}_{2}$ is called oxygen. Oxygen is diatomic. This means it is found in nature as two atoms combined.

One way to say it in words: Hydrogen peroxide decomposes to water and oxygen

Another way: 2 molecules of hydrogen peroxide decompose into 2 molecules of water and one molecule of oxygen .

The balanced equation represents the ratio of moles:
2 moles of hydrogen peroxide decomposes to produce 2 moles of water and 1 mole of oxygen gas.