Chemical Equilibrium Qn

• chocolates-xed

  1 Sep 09, 20:08

  
  can anyone help with this qn?? am stuck at part ii

  

• UltimaOnline

  1 Sep 09, 23:04

  For part(ii), Construct your Initial Change Equilibrium (ICE) table. Initial no. of moles of both reactants given. Let change be -2x, -x and +2x. Equilibrium (for this temperature) sees 95% conversion of SO2. Definition of % conversion is change(SO2)/initial(SO2) x 100%. Hence calculate your x. Hence calculate your Kc value, where Kc formula = molarities of RHS species / molarities of LHS species, and molarities are raised to the power of the stoichiometric coefficients. (Reminder : note that the volume of the reaction chamber is 2dm3. Use this volume when calculating molarities).