Question

Law of conservation holds true and can be verified in a school laboratory.

• A. only for precipitation reaction carried in open system
• B. only for precipitation reaction carried in close system
• C. for all types of chemical reactions carried in the open system
• D. for all types of chemical reaction carried in close system

Answer 1

The correct option is D

for all types of chemical reaction carried in close system

Explanation:

• In a closed system, the chemical reaction takes place inside the container.
• So the whole mass of the reaction is restricted inside the container.
• The law of conservation of mass states that mass can neither be created nor be destroyed.
• Thus mass which we take on the reactant side is equal to the mass taken on the product side.
• Hence all the chemical reaction which takes place inside the container follows the law of conservation of mass.
• As inside the closed container, there will be no loss of product or reactant in the atmosphere.
• Whereas in the open system there will be a loss of reactant and product in the open atmosphere.
• Precipitation reaction in a closed system will also follow the law of conservation of mass but it will come under the category of chemical reaction hence we will go for option d as it is a more appropriate option.

Hence, option (D) is the correct answer.