5- 135.29 (cont’d) nPVRTatmft296.2KLftmol KLatmmol airair33==⋅⋅=1220028317082062563..nnppmCCl Oair2×=−00446256317 4 1017 46...The level of phosgene in the room exceeded the safe level by a factor of more than 100. Even if the phosgene were below the safe level, there would be an unsafe level near the floor since phosgene is denser than air, and the concentration would be much higher in the vicinity of the leak. d.Pete’s biggest mistake was working with a highly toxic substance with no supervision or guidance from an experienced safety officer. He also should have been working under a hood and should have worn a gas mask. 5.30CHOCOH O2242+→+CHOCOHO2627223
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