Question

Example 1: A 15.9 gm sample
of sodium carbonate is added
6
to a solution of acetic acid
weighing 20.0 gm. The two
substances react releasing
carbon dioxide gas to the
atmosphere. After the
reaction, the contents of the
reaction vessel weigh 29.3 gm.
What is the mass of carbon
dioxide given off during the
reaction?​

Answer 1

Answer:

The total mass of reactants taken = 15.9 + 20.0 = 35.9 gm. From the conservation of mass, the final mass of the contents of the vessel should also be 35.9 gm. But it is only 29.3 gm. The difference is due to the mass of released carbon dioxide gas. Hence, the mass of carbon dioxide gas released = 35.9 – 29.3 = 6.6 gm 5-9g-sample-of-sodium-carbonate-is-added-to-a-solution-of-acetic-acid-weighing-20-0g