Which of the following equations demonstrates the Law of Conservation of Mass?
Responses
• CH4+O2→CO2+HO
• CH4+O2→CO2+H2O
• CH+O2→CO2+H2O
• CH4+O2→C+2H2O
The equation that demonstrates the Law of Conservation of Mass is:
CH4+O2→CO2+H2O
The equation that demonstrates the Law of Conservation of Mass is:
CH4 + O2 → CO2 + H2O
To determine which equation demonstrates the Law of Conservation of Mass, we need to understand what the Law of Conservation of Mass states. According to this law, the total mass of substances involved in a chemical reaction remains constant before and after the reaction. In other words, mass cannot be created or destroyed during a chemical reaction.
Let's analyze the given equations:
1. CH4 + O2 → CO2 + HO
2. CH4 + O2 → CO2 + H2O
3. CH + O2 → CO2 + H2O
4. CH4 + O2 → C + 2H2O
Out of these options, equation 2 (CH4 + O2 → CO2 + H2O) demonstrates the Law of Conservation of Mass because the total number of atoms of each element on the reactant side is equal to the total number of atoms of each element on the product side.
In this equation, we have:
On the reactant side:
1 Carbon (C)
4 Hydrogen (H)
2 Oxygen (O)
On the product side:
1 Carbon (C)
2 Hydrogen (H)
2 Oxygen (O)
The number of atoms for each element is the same on both sides of the equation, satisfying the Law of Conservation of Mass.
Therefore, the equation that demonstrates the Law of Conservation of Mass is:
CH4 + O2 → CO2 + H2O