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3. Chemical kinetics — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistry3. Chemical kinetics1 Mark
MCQ
The plot of $\log\,K$ Vs $\frac{1}{T}$ helps to calculate
  • A
    The energy of activation
  • B
    The rate constant of the reaction
  • C
    The order of reaction
  • ✓
    The energy of activation as well as frequency factor
✓

Answer

Correct option: D.
The energy of activation as well as frequency factor
d
According to Arrhenius equation

$\log k=\log A-\frac{E_a}{2.303} \cdot \frac{1}{T}$

Plot of $\log k\,vs\, \frac{1}{ T }$ is a straight line.

Slope $=-\frac{ E _{ a }}{2.303 R }$

Intercept $=\log A$

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