AACC Hydrogen Gas Electrolyzing Water & Pressure of Water Worksheet

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AACC Hydrogen Gas Electrolyzing Water & Pressure of Water Worksheet

Anne Arundel Community College, Science

AACC Hydrogen Gas Electrolyzing Water & Pressure of Water Worksheet

Question Description

A student prepares a sample of hydrogen gas by electrolyzing water at 25°C. She collects 112 mL of H₂ at a total pressure of 758 mm Hg. Vapor pressure of water at 25°C = 23.76 mm Hg, calculate:

the partial pressure of hydrogen, (b) the number of moles of hydrogen collected

A 2.5 L helium balloon is filled at a florist’s shop. If the temperature inside the shop is 68°F, what volume will the helium occupy after being left in an automobile at ?5°F in the parking lot for the day?

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