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MHT CET202311 May 2023Evening ShiftChemistryChemical KineticsActual

Identify the expression for average rate for following reaction. N _ 2( ~g ) +3 H _ 2( ~g ) 2 NH _ 3( ~g )

Options

  1. A- [ N ₂ ] t =- 1 3 [ H ₂ ] t = 1 2 [ NH ₃ ] t
  2. B- 1 3 [ N ₂ ] t = [ H ₂ ] t = 1 2 [ NH ₃ ] t
  3. C- [ N ₂ ] t = - [ H ₂ ] t = [ NH ₃ ] t
  4. D- 1 2 [ N ₂ ] t = - [ H ₂ ] t = 1 3 [ NH ₃ ] t

Correct answer

A. - [ N ₂ ] t =- 1 3 [ H ₂ ] t = 1 2 [ NH ₃ ] t

Step-by-step solution

In the rate expression, always make sure to express the rates with the correct sign: Negative for the reactants and positive for the products.

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