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Pressure and Temperature

The height of...

Question

The height of water $ρ = 1000 k g / m^{3}$ and oil $ρ = 720 k g / m^{3}$ are 6 m and 5m inside an open barometer. What is the atmospheric pressure in kPa?

A

136.42 kPa

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B

65.98 kPa

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C

101.25 kPa

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D

91.34 kPa

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Solution

The correct option is D 91.34 kPa
We know, pressure of the oil and water will balance the atmospheric pressure
$P_{o i l} + P_{w a t e r}$ = Atmospheric pressure $(P_{a t m}$ )
$P_{a t m}$ = $720 \times g \times 6$ + $1000 \times g \times 5$
$P_{a t m}$ = 91336 Pa = 91.34 kPa

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Pressure and Temperature

Standard XII Chemistry

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