Question

question 7 of 10
points possible: 1.00
what is the function of the gas pressure sensor in this experiment?
select one:
to monitor the increase in pressure over time as o₂ gas is produced by the reaction
to ensure the pressure inside the flask does not exceed a safe limit.
to measure the partial pressure of the hydrogen peroxide vapor.
to measure the atmospheric pressure in the lab.

Explanation:

The Gas Pressure Sensor is used to monitor changes in pressure over time. In an experiment where \(O_2\) gas is produced (likely from a reaction like the decomposition of hydrogen peroxide \(2H_2O_2
ightarrow2H_2O + O_2\uparrow\)), the sensor tracks how the pressure (caused by the produced \(O_2\)) changes as the reaction progresses. Measuring atmospheric pressure (a general - purpose sensor would be used for that), measuring partial pressure of hydrogen peroxide vapor (a different type of sensor, like a vapor - pressure specific sensor, would be more relevant), and ensuring pressure does not exceed a limit (a safety - valve or a pressure - limiting device, not just a sensor for monitoring the increase over time) are not the main functions here.

Answer:

To monitor the increase in pressure over time as \(O_2\) gas is produced by the reaction.