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NEST2017ChemistryChemical Kinetics

Consider the two first order reactions X Y and Y X for which the rate constants k₁ and k₂ are 4.0 10^3 ~s ⁻¹ and 2.0 10^3 ~s ⁻¹ respectively. One mole of X and three moles of Y are allowed to react and the concentrations of X and Y are measured as a function of time and plotted. The correct figure showing the variation of the concentrations [ X ] and [ Y ] with time and the correct equilibrium concentrations [ X ]_ e

Options

  1. AFig. 1 and [ X ]_ e q = 4 3 ,[ Y ]_ e q = 8 3
  2. BFig. 2 and [ X ]_ e q = 4 3 ,[ Y ]_ e q = 8 3
  3. CFig. 3 and [ X ]_ e q = 8 3 ,[ Y ]_ e q = 4 3
  4. DFig. 4 and [ X ]_ eq = 3 4 ,[ Y ]_ eq = 3 2

Correct answer

B. Fig. 2 and [ X ]_ e q = 4 3 ,[ Y ]_ e q = 8 3

Step-by-step solution

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