When 4.2 gram of sodium hydrogen carbonate is added to the solution of hydrochloric acid having mass 10 gram it is observed that 2.2 gram of carbon dioxide is released into the air. the Residue left Behind is found to be having mass 12 gram. show that these observation are in agreement with the law of conservation of mass.
Answers & Comments
Answer:
Na2CO3+2HCl⟶2NaCl+H2O+CO2
Law of conservation of mass- It states that for any closed system, the mass of the system always remain constant over time, as mass of system cannot change. Therefore, (mass of Na2CO3+ mass of HCl) should be equal to (mass of residue + mass of CO2)
Mass of Na2CO3=4.2 g
Mass of HCl=10 g
Mass of residue =12 g
Mass of CO2=2.2 g
∴ Mass of Na2CO3+ Mass of HCl=14.2 g
and Mass of residue + Mass of CO2=14.2 g
Therefore, they follow law of conservation of mass.
~ Priyanshu
Answer:
When 4.2 g of sodium bicarbonate is added to a solution of hydrochloric acid weighing 10g. it is observed that 2.2g of carbon dioxide is released into the atmosphere. The residue behind is found to weigh 12g show that, this observation in are in arrangement with the law of conservation of mass.