A student does this experiment and obtains the following data atmospheric pressu

Question

A student does this experiment and obtains the following data atmospheric pressure: 692.3 torr (or mmHg) temperature of water in jar: 21.9 degree C volume of water displaced: 214.1 mL Which of the following statements is correct (you will need to use the chart in the introduction) The partial pressure of the O_2 gas is 672.5 torr and the volume of water is 214.100 L The partial pressure of the O_2 gas is 672.5 torr and the volume of water is 0.2141 L The partial pressure of the O_2 gas is 712.1 torr and the volume of water is 0.2141 L The partial pressure of the O_2 gas is 19.8 torr and the volume of water is 0.2141 L The partial pressure of the O_2 gas is 692.3 torr and the volume of water is 0.2141 L

Explanation / Answer

Pressure of O2 = total pressure - vapour pressure of water at 21.9 (22 degree C approx.)

PO2 = 692.3 - 19.8

PO2 = 672.5 torr

Volume of water = 214.1 mL = 0.2141 L

So, (b) The partial pressure of O2 gas is 672.5 torr and the volume of water is 0.2141 L

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