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AP EAMCET2010ChemistryChemical Kinetics

What is the slope of the straight line for the graph drawn between k and 1 T , where k is the rate constant of a reaction at temperature T ?

Options

  1. A-E_a 2.303 R
  2. B-E_a R
  3. CE_a R
  4. DR E_a

Correct answer

B. -E_a R

Step-by-step solution

Arrhenius equation is k=A e^ -E_a / R T On taking log both sides, k= A- E_a R T or k=- E_a R T + A Since, the reaction, y=m x+c when a graph is plotted between k and 1 T a straight line is obtained. The slope of the straight line is equal to - E_a R .

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