Question

32. The reaction system POCls(g) POCI(g)+ Cl2(g) is at equilibrium. Which of the following statements describes the behavior of the system if POCI is added to the container? A. The forward reaction will proceed to establish equilibrium. B. The reverse reaction will proceed to establish equilibrium. C. The partial pressures of POCls and POCI will remain steady while the partial pressure of chlorine increases. D. The partial pressure of chlorine remains steady while the partial pressures of POCl E. The partial pressure of chlorine will increase while the partial pressure of POCI decreases. and POCl increase

Answer 1

on adding POCl, according to le chatelier principle, on increasing the concentration of product reaction moves in back ward direction to reestablish equlibrium.so reverse reaction proceeds to establish equlibrium. and when reactoin goes in backward direction, partial pressure of POCl and Chlorine will decreases and partial pressure of POCl₃ will increases.

so answer is Only B : The reverse reaction will proceed to establish equlibrium.