1. Tardigrade
  2. Question
  3. Chemistry
  4. A sample of O2 gas is collected over water at 23 °C at a barometric pressure of 751 mm Hg (vapour pressure of water at 23°C is 21 mm Hg).The partial pressure of O2 gas in the sample collected is

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. A sample of $O_2$ gas is collected over water at $23 ^{\circ}C$ at a barometric pressure of $751\, mm\, Hg$ (vapour pressure of water at $23^{\circ}C$ is $21\, mm\, Hg$).The partial pressure of $O_2$ gas in the sample collected is

States of Matter

Solution:

Using the Dalton's law
P (Total) = Poxygen +Pwater
The vapor pressure of water is $21\, mmHg$
$751\, mmHg =$ Poxygen $+21\, mmHg$
Poxygen $=751\, mmHg -21\, mmHg$
Poxygen $=730\, mmHg$
Convert the partial pressure of oxygen in to atmosphere
$(730\, mmHg )(1 atm / 760\, mmHg )=0.96\, atm$