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MHT CET Medical202625 April 2026Morning ShiftChemistryChemical KineticsActual

The slope of the graph [ A ]_t against time for zero order reaction is

Options

  1. A-k
  2. Bk
  3. Ck/2.303
  4. D-k/2.303

Correct answer

A. -k

Step-by-step solution

For a zero order reaction, the integrated rate law is given by: [ A ]_t = -kt + [ A ]₀ Comparing this equation with the equation of a straight line y = mx + c , we get y = [ A ]_t and x = t . The slope of the graph m is -k and the y-intercept c is [ A ]₀ . Therefore, the slope of the graph of [ A ]_t against time is -k . Answer: -k

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