Question

In principle many different liquids could be used in a barometer. Mercury is usually preferred by virtue of its low vapour pressure and high density. As part of a school project, you have decided to build a barometer using water. Assuming the maximum pressure that the instrument will need to read is 1.05 atm, determine the height of the column required if (a) you ignore the vapour pressure of water or (b) you take the vapour pressure of water (PH2O=3.17 kPa at 25 ˚C) into account. Use the densities: Hg=13.534 g/mL, H2O(l)=0.997 g/mL.

Answer 1

aum 5 10319s Pa