Partial Pressures of Substances in Vapor?

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Partial Pressures of Substances in Vapor?



The U.S. Food and Drug Administration lists dichloromethane (CH2Cl2) and carbon tetrachloride (CCl4) among the many chlorinated organic compounds that are carcinogenic (cancer-causing). What are the partial pressures of these substances in the vapor above a solution of 1.89 mol of CH2Cl2 and 1.21 mol of CCl4 at 23.5°C? The vapor pressures of pure CH2Cl2 and CCl4 at this temperature are 352 torr and 118 torr, respectively. (Assume ideal behavior.) 

Pressure CH2Cl2 
_________ torr 
Pressure CCl4 
________torr 

Any help would be much appreciated. Thank you! 



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