A mixture of 1.00 mole of PCl₃ and 2.00 moles of PBr₃ is placed in a 1.00-L reaction vessel. At the temperature of the experiment, K = 2.0 for the following reaction:

(a) What is the equilibrium concentration of each species in the vessel?

(b) Because the number of bonds is the same on both sides of the equation, this reaction should be close to thermoneutrality, meaning that it is neither exothermic nor endothermic. What drives this reaction?

Transcribed Image Text:

PCl3 + PBr3 PC1₂Br + PCIBr₂