hydrogen peroxide can be used to disinfect and clean surfaces around the home. it breaks down over time into…
hydrogen peroxide can be used to disinfect and clean surfaces around the home. it breaks down over time into oxygen gas and water. consider the following reaction: some amount of hydrogen peroxide (h₂o₂) breaks down to produce 3 molecules of oxygen (o₂) and 6 molecules of water (h₂o). complete the table below. chemical element number of atoms in the reaction h o during this reaction, how many molecules of hydrogen peroxide (h₂o₂) react?
Answer
Explanation:
Step1: Calculate number of H atoms
Each water molecule ($H_2O$) has 2 H - atoms. There are 6 water molecules. So the number of H - atoms is $2\times6 = 12$.
Step2: Calculate number of O atoms
Each oxygen molecule ($O_2$) has 2 O - atoms, so 3 oxygen molecules have $3\times2=6$ O - atoms. Each water molecule ($H_2O$) has 1 O - atom, so 6 water molecules have 6 O - atoms. The total number of O - atoms is $6 + 6=12$.
Step3: Determine number of $H_2O_2$ molecules
The chemical formula of hydrogen peroxide is $H_2O_2$. Since there are 12 H - atoms and 12 O - atoms in the products, and each $H_2O_2$ molecule has 2 H - atoms and 2 O - atoms, the number of $H_2O_2$ molecules is $\frac{12}{2}=6$.
Answer:
| Chemical element | Number of atoms in the reaction |
|---|---|
| H | 12 |
| O | 12 |
| 6 |