Question

Using the ideal gas law, explain how the gas pressure sensor must work for the vernier labquest.

Answer 1

PV = nRT
P & V :
you attach a syringe to the pressure sensor whose plunger is pulled to a lower value,
and this the pressure value is recorded. After pulling the plunger in and out a couple
of times and recording the respective values you can observe that for a low value of
volume you should obtain a higher value of pressure. Inorder to fulfill the ideal gas law
pressure sensor must compress all the air inside.Therby exerting more force on the sensor
when the syringe is plugged in so that the pressure increases as volume decreases.
This is how a pressure sensor must work when there is Volume change.

P & n :
Your pressure sensor must be able to take certain value of the gas from the source and record the
pressure. Therefore the limits for n must be set , nothing more or less than that can be taken
by the pressure sensor

P & T:
Pressure sensor is made to detect the change in the pressure when the source is subjected
to heat. The heat travels from source to the other end the gas might react
by expanding/compression which causes a change in pressure. This change is
detected by pressure sensor.