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Question: Answered & Verified by Expert
Which set represent 1st order reactions out of (I), (II) and (III)?



where a = initial amount of reactant and x = amount of product at time t
ChemistryChemical KineticsJEE Main
Options:
  • A I, II and III
  • B I and II
  • C II and III
  • D I and III
Solution:
2921 Upvotes Verified Answer
The correct answer is: I and II
kt=2.303logaa-x
logaa-x=k2.303t.(I)
log( a )log( ax )= k 2.303 t
log ax =log a k 2.303 t. II
t 1 2 = 0.693 k .( III )

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