What is the law of conservation of mass describe with an activity
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Law of conservation of mass states that energy can neither be created nor be destroyed.
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Antoine Lavoisier gave the law of conservation of mass.
According to this law, ''Matter is neither created nor destroyed in a chemical reaction.''
In a chemical reaction, the total mass of the products is equal to the total mass of the reactants.
Example:-
CaCO3 ------------ CaO + CO2
Activity...
To verify the law of coservation of mass:
1. Prepare 5% aqueous solution of sodium sulphate and barium chloride seperately (5 g salt is weighed and transfer into a volumetric flask to make its volume to 100 ml).
2. Take some volume of sodium sulphate in a conical flask and some solution of barium chloride in a small test tube or ignition tube.
3. Hang the ignition tube in the flask carefully in such a way that it should not mix with the solution kept in the conical flask. Put a cork on te flask.
4. Weigh the conical flask with all its content carefully.
5. Now, tilt the conical flask in such away that both the solutions are mixed well and a chemical reaction occurs.
6. Weigh the conical flask again with all its content.
Observations..
1. As both the solutions mix, a chemical reaction takes place and new substances (products) are formed as below:
Barium chloride+Sodium sulphate ----- Barium sulphate+ Sodium chloride
2. On seeing both the weights of conical flask before and after the reaction, it is found that both weights are same.
According to this law, ''Matter is neither created nor destroyed in a chemical reaction.''
In a chemical reaction, the total mass of the products is equal to the total mass of the reactants.
Example:-
CaCO3 ------------ CaO + CO2
Activity...
To verify the law of coservation of mass:
1. Prepare 5% aqueous solution of sodium sulphate and barium chloride seperately (5 g salt is weighed and transfer into a volumetric flask to make its volume to 100 ml).
2. Take some volume of sodium sulphate in a conical flask and some solution of barium chloride in a small test tube or ignition tube.
3. Hang the ignition tube in the flask carefully in such a way that it should not mix with the solution kept in the conical flask. Put a cork on te flask.
4. Weigh the conical flask with all its content carefully.
5. Now, tilt the conical flask in such away that both the solutions are mixed well and a chemical reaction occurs.
6. Weigh the conical flask again with all its content.
Observations..
1. As both the solutions mix, a chemical reaction takes place and new substances (products) are formed as below:
Barium chloride+Sodium sulphate ----- Barium sulphate+ Sodium chloride
2. On seeing both the weights of conical flask before and after the reaction, it is found that both weights are same.
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