TS EAMCET · Chemistry · Chemical Kinetics
For a reaction, the threshold energy is \(75 \mathrm{~kJ} / \mathrm{mole}\). If the internal energy of the reactants is \(20 \mathrm{~kJ} / \mathrm{mole}\), the activation energy (in \(\mathrm{kJ} / \mathrm{mole}\) ) is
- A 55
- B 20
- C 75
- D 95
Answer & Solution
Correct Answer
(A) 55
Step-by-step Solution
Detailed explanation
Threshold energy = Activation energy + energy possessed by reacting species \[ 75=\mathrm{E}_{\mathrm{a}}+20 \text { or, } \mathrm{E}_{\mathrm{a}}=75-20=55 \mathrm{~kJ} / \mathrm{mol} \]
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