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A 100 ml flask containing O ₂ at 1.2 atm and 300 K is connected to a 250 ml flask containing NO ( g ) at 0.6 atm and 300 K , by means of a narrow tube of negligible volume, when they combine quantitatively to form NO ₂ . Finally NO ₂( ~g ) dimerized, partially into N ₂ O ₄( ~g ) and pressure inside the flask was found to be 0.41 atm at the same temperature. Find % dimerization of NO ₂ as 2 NO ₂( ~g ) N ₂ O ₄( ~g ) (m

Correct answer

68.63

Step-by-step solution

2 NO + O ₂ 2 NO ₂ ~N ₂ O ₄ array lll Initial & 0.4285 & 0.3428 array array llll partial press. 0 & 0.12855 & 0.4285 array 0.4285-P P 2 Total pressure x at the end aligned & P=0.55704- P 2 =0.41 & P=0.2941 & % dimerization = 0.2941 0.4285 100 & =68.63 % aligned

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