9. Following experiment is performed in steps given below:
• Take a solution of calcium chloride in a flask and a solution of sodium sulphate in a test tube.
• Tie a thread to the test tube and carefully lower it into the flask. Seal the flask with a cork to make it airtight
• Weigh the flask on a balance. It weighs around 300.23 grams.
• Tilt and swirl the flask and allow the contents of the test tube to come in contact with the contents of the flask. Now answer following questions:
(a) On weighing the flask after the experiment what do you think about the change in the mass of the flask?
(i) Increases
(ii) Decreases
(iii) Remains same
(b) Name the law that supports the experiment. "
(c) If 10.0 g of CaCO3 on heating give 4.4 g of CO2 and xg of Cao. Estimate the mass of Cao.
Answers
Answer:
Following experiment is performed in steps given below:
• Take a solution of calcium chloride in a flask and a solution of sodium sulphate in a test tube.
• Tie a thread to the test tube and carefully lower it into the flask. Seal the flask with a cork to make it airtight
• Weigh the flask on a balance. It weighs around 300.23 grams.
• Tilt and swirl the flask and allow the contents of the test tube to come in contact with the contents of the flask. Now answer following questions:
(a) On weighing the flask after the experiment what do you think about the change in the mass of the flask?
(i) Increases (ii) Decreases
(iii) Remains same
(b) Name the law that supports the experiment. "
(c) If 10.0 g of CaCO3 on heating give 4.4 g of CO2 and xg of Cao. Estimate the mass of Cao swa
Explanation:
In this activity, a white precipitate of CaSO4 in NaOl is seen in the conical flask after the reaction. There is no change in the weight of the flask before and after the reaction. This activity verifies the Law of Conservation of Matter i.e., in a chemical reaction, the total weight of the reactants is same as the total weight of the products formed due to the chemical reactionsRead more on Sarthaks.com - https://www.sarthaks.com/1534929/take-solution-calcium-chloride-in-conical-flask-and-solution-of-sodium-sulphate-test-tube