In this experiment, you obtain a percent recovery for carbon dioxide in Part A, which you then use in Part B with the antacid. Why can you use the same percent recovery for both parts? (Select all that apply)

Question

Parts A and B both use 3 M HCI
• Both reactions produce an equivalent amount of water as a product
The gas collection apparatus is the same for Parts A and B
• Carbon dioxide is a product of both reactions, making the ideality of gas equivalent in both systems

Answer 1

In this experiment, you can use the same percent recovery for both parts due to the following reasons:

1. Parts A and B both use 3 M HCl: This consistency in the concentration of hydrochloric acid used ensures that the conditions under which carbon dioxide is produced are similar, allowing for a comparable percent recovery.

2. The gas collection apparatus is the same for Parts A and B: Using the same apparatus means that any potential losses or inefficiencies in gas collection should remain consistent between the two parts, making the percent recovery applicable to both.

3. Carbon dioxide is a product of both reactions, making the ideality of gas equivalent in both systems: Since carbon dioxide is the common product, the behavior of the gas, under the same conditions (temperature, pressure) in both parts, can be expected to be similar in terms of recovery.

The statement about both reactions producing an equivalent amount of water may not directly relate to the percent recovery of carbon dioxide, so it is not necessarily a valid reason for using the same percent recovery in this context.

So, the applicable reasons are:

• Parts A and B both use 3 M HCl.
• The gas collection apparatus is the same for Parts A and B.
• Carbon dioxide is a product of both reactions, making the ideality of gas equivalent in both systems.