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NTA Abhyas NEET2020ChemistryChemical KineticsPractice

Rate constant of two reactions are given below. Indentifying their order of reaction. ( i ) k = 6.3 × 1 0 - 2 L m o l - 1 s - 1 ( i i ) k = 2.8 × 1 0 - 4 s - 1

Options

  1. A(i) second order, (ii) first order
  2. B(i) first order, (ii) second order
  3. C(i) zero order, (ii) first order
  4. D(i) second order, (ii) zero order

Correct answer

A. (i) second order, (ii) first order

Step-by-step solution

For second order, units of rate constant = m o l L - 1 s × 1 ( m o l L - 1 ) 2 = m o l - 1 L s - 1 For first order, units of rate constant = m o l L - 1 s × 1 m o l L - 1 = s - 1

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