Question

How would the volume be changing if the pressure were decreasing? Does this demonstrate a direct or inverse proportion? What liquid is used to measure the pressure changes in this experiment and how is it used? how will it change with increasing pressure (demonstration of Boyle's law)

Answer 1

1). Pressure is inversely propotional to volume. It is according to Boyle's law. Always remind this example, then you will never forget this pressure volume relationship, consider a syringe if you apply pressure on the piston back side, (increasing pressure), the volume will decrease.

2). You can use mercury for measuring the pressure change. A very simple experiment is U-tube set up, one side is connecte to the region of ineterest and the another side pressure is applied. The difference in liquid level represent the applied pressureThe pressure exerted by the column of liquid of hieght 'h' and density ' $\rho$ ' is given by the hydrostatic pressure equation , P=hg $\rho$ .