Question

On a balance, you have beakers of AgNO3AgNO3 solution and NaClNaCl solution. When mixed, they will form AgCl(s)AgCl(s). What will happen to the mass of the new mixture?

Answer 1

Explanation:

According to the law of conservation of mass, mass can neither be created nor it can be destroyed. But it can be simply transformed from one form to another.

Therefore, when $AgNO_{3}$ is added to NaCl then the compound formed will have same mass as that of reactants.

       $AgNO_{3} + NaCl \rightarrow AgCl + NaNO_{3}$

Total mass of reactants is (169.87 + 58.44) g/mol = 228.31 g/mol

Total mass of products is (143.32 + 84.99) g/mol = 228.31 g/mol

Thus, we can conclude that mass of the new mixture will stay the same.