Question

a) Sodium chloride reacts with silver nitrate to produce silver chloride and sodium nitrate (3 1. Write the equation 2. Check weather it is balanced, if not balance it. 3. State the law that this equation satisfied (b) Give an example of a reaction where following are involved (3) 1. Heat 2. Light 3. Electricity (c) Write the chemical reaction where the following changes are observed. (4 1). Gas is evolved 2. Color change is noticed 3. Precipitate is formed 4. Physical state is changed​

Answer 1

Answer:

Conservation of mass

Reaction:

NaCl+AgNO

3

→AgCl+NaNO

3

Mol : 1 mol 1 mol 1 mol 1 mol

Mass : 58.5 g 170 g 143.5 g 85 g

Total mass of reactants is equal to the total mass of products. This is the law of conservation of mass.