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Solve the problem (in text problem 7.9) Calculate equilibrium amount of NO and Br2 in 2NO + Br2 ? 2NOBr, Initial Concentration of NO=0.087, Br2=0.0437 & NOBr at eqm=0.0578. Give explanation.

      2NO(g) + Br₂(g) ? 2NOBr(g)

Stoichiometry :           2 mol               1 mol               2 mol

Initial amount :            0.087 mol        0.0437 mol      ___

Eqm. amount :             0.087 -              0.0437 - 
                                      0.0578              0.0578/2     0.0578

                                = 0.0352 mol        = 0.0178 mol  

Eqm. Amount of NO = 0.0352 mol
Eqm. Amount of Br₂ = 0.0178 mol.