JEE Main Chemistry question
In the reaction, , the equilibrium concentration of and are 0.4 and 0.2 mol/L respectively. If the value of is 0.5 what is the concentration of in mol/L?
Answer: (B)
Solution
K_c=[PCl_3][Cl_2]/[PCl_5]\Rightarrow0.5=(0.2\times[Cl_2])/0.4\Rightarrow[Cl_2]=1.0.