Question

QUESTION 18 Consider the following reversible reaction equation: 2NOCI(g) + 2NO(g) + Cl2(g) Ka = 4.5 x 10-4 Complete the following sentences (a-e) by selecting the best choice from the dropdown menus. a) This is an example of a v equilibrium. b) At equilibrium, this system will contain mostly c) If more Clz is added to this system at equilibrium, the reaction will shift towards the d) If some NO is removed from this system at equilibrium, the reaction will shift towards the e) If the volume of this system at equilibrium is increased, the reaction will shift towards the

Answer 1

This is an awesome problem of Organic Reaction Chemistry, I provide a detailed solution of Q.18 according to the guidelines as given below, Hope this will help you.

Given Reaction :) 2 NOCI(g) = 2 NO(g) + Cl2(g) Ka = 4.5 x 10-4 * The ka value is very less ie less than one. Now we can answer b the given question as follows :) This is an example of a backward directed Chemical Equilibrium . ( Equilibrium constant K<1) At equilibrium , system contain mostly Noel (= K (1) The difference of mole numbers of product & reactant in gaseous state, Ang Emproduct -En Reactant the tem will = 3-2 - I (Positive) reaction the no. of moles of product side increases, Now if So during reaction more Cl, is added to this system at equilibrium, the reaction will shift towards the left hand or Reactant side to suppress the increase mole no. of el at product side. + According to Le-chatelier principle; the concentration, temperature, pressure et.e at equilibrium, then reaction altains new equilibrium to suppress the changes of reaction condition. if we change ď If some NO is removed from this system at equilibrium, the reaction wili snift towards the → Right hand side or product side to increase the concentration of product side i.e No. e If the volume of this system at equilibrium is increased, the reaction will shift towards the + product side or right hand side. volume increased then pressure of the system is autom matically decreases. So to maintain the pressure, there will be increase the no. of moles of product side (=) Ang=1). ر

Don't forget to rate, It motivates & also helps me to provide the best solution again in the future. Thanks in advance.