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(Solved): At a certain temperature the vapor pressure of pure acetyl bramide \( \left(\mathrm{CH}_{3} \mathrm ...
At a certain temperature the vapor pressure of pure acetyl bramide \( \left(\mathrm{CH}_{3} \mathrm{COBr}\right) \) is measured to be 489 , torr. Suppose a solution is prepared by mixing \( 138.8 \) of acetyl bromide and \( 69.3 \mathrm{~g} \) of benzene \( \left(\mathrm{C}_{6} \mathrm{H}_{6}\right) \). Calculate the partial pressure of acetyl bromide vapor above this solution. Round your answer to 3 significant digits. Note for advanced students: you may assume the solution is ideal.