What will happen when mixture of phosphorus chloride with chlorine?

Strange question... but a question nonetheless. I'll ask you another question, do you know how phosphorous chloride is prepared? :)

If not, I strongly suggest that you read these wikipedia articles:
Phosphorus trichloride - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Phosphorus_trichloride#Preparation)
Phosphorus pentachloride - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Phosphorus_pentachloride#Preparation)