1.

Three moles of PCl5, three moles of PCI3 and two moles of Clz are taken in a closed vessel. If at equilibrium the vessel has 1.5 moles of PCl5, the number of moles of PCl3 present in it is?

A. 4.5
B. 6
C. 3
D. 5
Answer» B. 6


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