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Determine the value of the equilibrium constant for the reaction 2 B r - ( a q ) + I 2 ( s ) ⇌ B r 2 ( l ) + 2 I - ( a q ) E c e l l o = - 0.54 V

Options

  1. A5.01 × 1 0 - 19
  2. B18.30
  3. C1.7 × 1 0 54
  4. D1.9 × 1 0 18

Correct answer

A. 5.01 × 1 0 - 19

Step-by-step solution

The relation between equilibrium constant (K) and E c e l l o is given as log ⁡ K = E c e l l o . n 0.059 V here, n = 2 = - 0.54 V × 2 0.059 V = - 1.08 0.059 = - 18.3 On taking antilog K = 5.01 × 1 0 - 19

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