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NTA Abhyas NEET2020ChemistryChemical KineticsPractice

For the zero order reaction, A → B + C ; initial concentration of A is 0.1 M. If [A] = 0.08 M after 10 minutes, then it's half life and completion time are respectively

Options

  1. A10 min , 20 min
  2. B25 min , 50 min
  3. C2 × 1 0 - 3 min , 4 × 1 0 - 3 min
  4. D250 min , 500 min

Correct answer

B. 25 min , 50 min

Step-by-step solution

For zero order reaction ⇒ C t = C 0 − kt So, k = C 0 − C t t = 0.1 − 0.08 10 = 2 × 10 − 3 T 1 / 2 = C 0 2 k = 0.1 2 × 2 × 10 − 3 = 25 min T 100 % = C 0 k = 0.1 2 × 10 − 3 = 100 2 = 50 min

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