Chapter 18, Problem 13STP

Interpretation Introduction

Interpretation:

The chemical reaction shown in the diagram demonstrates the law of conservation of mass. Explain.

Concept introduction:

According to law of conservation of mass, total mass of a system always remain conserved. It is only converted from one form to other.

In a chemical reaction, total mass of reactants is equal to total mass of products.

Answer to Problem 13STP

As the number of each type of atoms on both sides of reaction are equal. So it follows law of conservation of mass.

Explanation of Solution

Four atoms of element A are present in reactant side and these atoms are present in the form of molecules in the product side. Eight atoms of B element are present in reactant side and these atoms are present in the form of molecules in the product side. Thus, total mass on both sides remains same and law of conservation of mass is fulfilled.

Conclusion

Thus in the diagram total mass is conserved.