For the reaction, PCl ₅ PCl ₃+ Cl ₂ , rate and rate constant are 1.02 10⁻⁴ ~mol ~L ⁻¹ ~s ⁻¹ and 3.4 10⁻⁵ ~s ⁻¹ respectively at a given instant. The molar concentration of PCl ₅ at that instant is

Step-by-step solution

Given, PCl ₅ PCl ₃+ Cl ₂ Rate =1.02 10⁻⁴ ~mol ~L ⁻¹ ~s ⁻¹k=3.4 10⁻⁵ ~s ⁻¹ [ PCl ₅ ]=? For the given equation, rate will be given by Rate =k [ PCl ₅ ]1.02 10⁻⁴=3.4 10⁻⁵ [ PCl ₅ ] [ PCl ₅ ]= 1.02 10⁻⁴ 3.4 10⁻⁵ [ PCl ₅ ]=3 ~mol ~L ⁻¹