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The unit of 1st order rate constant is:

Correct answer: B. Sec-1

  • A. Sec
  • B. Sec-1
  • C. Mol.dm-3sec-1
  • D. None of the above

Explanation

Sec-1 is the correct unit for a first-order rate constant. This is because the first-order rate constant (k) is a measure of the rate at which a reaction occurs, specifically for a first-order reaction. Hence, option b is correct.

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About Chemical Equilibrium

Reversible reactions reach dynamic equilibrium when forward and reverse rates become equal, and Le Chatelier's principle predicts the effect of changing concentration, pressure or temperature. The chapter also covers solubility product, the common ion effect, buffer action and the conditions used in Haber's process, with equilibrium shifts distinguished from changes in the equilibrium constant.

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