A small amount wet of hydrogen gas (H₂)can be prepared by the reaction of zinc with excess hydrochloric acid and trapping the gas produced in an inverted tube initially filled with water.If the total pressure of the gas in the collection tube is 757.9 mmHg at 25°C,what is the partial pressure of the hydrogen? The vapor pressure of water is 23.8 mmHg. A)734.1 mmHg B)781.7 mmHg C)757.9 mmHg D)32.8 mmHg E)47.7 mmHg

Question

Quizplus · Accepted Answer

The partial pressure of hydrogen gas can be calculated using Dalton's law of partial pressures, which states that the total pressure of a mixture of gases is the sum of the partial pressures of the individual gases.

Partial pressure of hydrogen gas = Total pressure - Vapor pressure of water

Partial pressure of hydrogen gas = 757.9 mmHg - 23.8 mmHg

Partial pressure of hydrogen gas = 734.1 mmHg

Therefore, the correct answer is choice A (734.1 mmHg).

A Small Amount Wet of Hydrogen Gas (H2)can Be Prepared

A Small Amount Wet of Hydrogen Gas (H₂)can Be Prepared