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AP EAMCET201823 Apr 2018Morning ShiftChemistryChemical KineticsActual

The rate equation for a first order reaction is given by [R]=[R]₀ e^ -k t . A straight line with positive slope is obtained by plotting. [R]₀= initial concentration of reactant, [R]= concentration of reactant at time, t

Options

  1. A[R]₀ [R] vs time
  2. B[R] vs time
  3. C[R] vs time
  4. D[R] [R]₀ vs time

Correct answer

A. [R]₀ [R] vs time

Step-by-step solution

For the equation [R]=[R]₀ e^ -k t Taking log we get array rlrl & [R] & =-k t+ in [R]₀ & & [R] [R]₀ & =-k t & & & k & = 1 t in [R]₀ [R] k & = 2.303 t [R]₀ [R] array When graph is ploted of [R]₀ [R] against t , we get a straight line with positive slope = k 2.303 .

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