Vapor pressure of water → pressure at which water vapor is in thermodynamic equilibrium with its condensed state → depends on temperature
Hydrogen peroxide (H2O2) decomposes in the presence of a catalyst to form water and oxygen. The catalyst is added to 5.00 mL of a hydrogen peroxide solution at 25.0˚C, and 49.5 mL of gas is collected over water at a total pressure of 763.6 mmHg.
What is the vapor pressure of water under these conditions?
a) 22.78 mm Hg
b) 23.78 mm Hg
c) 25.78 mm Hg
d) 32.78 mm Hg
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