After the system returned to room temperature, an adjustment was made by raising the beaker until the liquid level in both the beaker and the flask were the same. Why was this step necessary?
A.
to remove excess water from the rubber tubing and into the beaker
B.
to equilibrate the pressure in the flask with the external pressure
C.
to make sure all the nitrogen gas was out of the rubber tubing
D.
to make sure there was no contamination by the hydrochloric acid
Exam No：AP Chemistry Problem Set 6 Year：2024 Question No：APChemistry2024AP0188
Answer:
B
Knowledge points:
3.6 Deviation from Ideal Gas Law
Solution:
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