Question

Sodium chloride reacts with silver nitrate to produce silver chloride and sodium nitrate

Write the equation.

Check whether it is balanced, if not balance it.

Find the weights of reactants and products.

State the law which this equation satisfies. 

Answer 1

(a) NaCl+ AgNO₃ → NaNO₃ + AgCl↓

(b) It is a balanced equation.

(c) Weights of reactants:NaCl - 58.44, AgNO₃ - 169.87 
Weights of products: NaNO₃ - 84.99, AgCl - 143.32
NaCl + AgNO₃ → NaNO₃  + AgCl
(23+35.5) + (108+14+48) → (23+14+48) + (108+35.5)
58.5 + 170 → 85 + 143.5
228.5 g → 228.5 g

(d) Law of conservation of mass: Matter is neither created nor destroyed in the course of a chemical reaction.