Zinc reacts with aqueous sulfuric acid to form hydrogen gas. in an experiment, 125 ml of wet h2 is collected over water at 27 degc and a barometric pressure of 753 torr. the vapor pressure of water at 27 degc is 26.74 torr. the partial pressure of hydrogen in this experiment in atmospheres is

Answer : The partial pressure of hydrogen gas is, 726.26 torr.

Solution : Given,

Total pressure = 753 torr

Partial pressure of water = 26.74 torr

Formula used :

Total pressure = Partial pressure of gas + Partial pressure of water

Now put all the given values in this formula, we get the partial pressure of gas.

753 torr = Partial pressure of gas + 26.74 torr

Partial pressure of the gas = 753 - 26.74 = 726.26 torr

Therefore, the partial pressure of hydrogen gas is, 726.26 torr.

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