Question

with a labelled diagram describe an activity to demonstrate the law of conservation of mass?

Answer 1

Answer:

Explanation:

Prepare 5% solution of each: Sodium sulphate and Barium chloride.

• A little amount of sodium sulphate solution is taken in a conical flask and a little solution of barium chloride is taken in an ignition tube.

• Hang the ignition tube in the conical flask carefully as shown in the figure.

• Put a cork on the flask and weigh the flask with its contents.

• Now, tilt and swirl the flask so that the two solutions mixed-up well.

• Weigh the flask again.

© Observation :

• Chemical reaction takes place.

• Weight of the flask remains same before and after the reaction.

(d) Conclusion :

• Total mass of the products = Total mass of the reactants.

(Law of conservation of mass is proved).

I am sorry i could not get the diagram