In a barometer, if we replaced the mercury with alcohol and water?

AI Thread Summary
In a barometer, replacing mercury with alcohol and water leads to different displacement behaviors due to density differences. Alcohol, with a density of 800 kg/m^3, is less dense than water's 1000 kg/m^3, allowing it to be displaced further under the same pressure conditions. The pressure at the bottom of a liquid column is calculated using the formula P = ρgh, where ρ is the density, g is the acceleration due to gravity, and h is the height of the column. This principle explains why alcohol can rise higher in the barometer compared to water when equal pressure is applied. Understanding these fluid dynamics is crucial for accurate barometric measurements.
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In a barometer, assuming bernoulie properties(incompressible fluid) if we replaced the mercury with alcohol and water why would the alcohol be able to be displaced further with pressure. It has a lower density that water 800kg/m^3 than water which has 1000kg/m3.

What chemical properties or properties due to density would give us the result where alcohol can be moved up further when we apply the same pressure.
 
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What is the pressure at the bottom of a liquid column of a height h and a density ρ?
 

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