A 2.24 l cylinder of oxygen at 0°C and 1 atm is found to develop a leakage. When the leakage was plu — States of Matter and Gaseous State Chemistry Question
Question
A 2.24 l cylinder of oxygen at 0°C and 1 atm is found to develop a leakage. When the leakage was plugged, the pressure dropped to 570 mm of Hg. The number of moles of gas that escaped will be
Answer: A
💡 Solution & Explanation
dP = 760 - 570 = 190 mm Hg = 0.25 atm. dn = 0.25 * 2.24 / (0.0821 * 273) = 0.025 mol. Therefore, correct answer is A.
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