A sample of O 2 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 O 2 gas in the sample collected is ...... Options: A . &nbsp21 mm Hg B . &nbsp751 mm Hg C . &nbsp0.96 atm D . &nbsp1.02 atm

Answer: Option C : C Pressure of O 2 (dry) = 751 - 21 = 730 mm Hg = 730 760 = 0.96 atm

A sample of O2 gas is collected over water at 23∘ C at a b

Question - 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 ......

Options:

A . 21 mm Hg

B . 751 mm Hg

C . 0.96 atm

D . 1.02 atm

Answer: Option C
:
C
Pressure of

O_{2}

(dry) = 751 - 21 = 730 mm Hg =

\frac{730}{760}

= 0.96 atm

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