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Thermodynamics question

2010 · Q124
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Thermodynamics question

2010 · Q124

NEETChemistryThermodynamicsMCQ+4 / −1
For an endothermic reaction, energy of activation is Ea and enthalpy of reaction is Δ\DeltaΔH (both of these in kJ/mol). Minimum value of Ea will be
  1. A
    less than Δ\DeltaΔH
  2. B
    equal to Δ\DeltaΔH
  3. C
    more than Δ\DeltaΔH
  4. D
    equal to zero
View written solutionFree

Correct answer: C

Here,

Ea = activation energy of forward reaction

E’a = activation energy of backward reaction

Δ\Delta ΔH = enthalpy of the reaction

AIPMT 2010 Prelims Chemistry - Thermodynamics Question 64 English Explanation

From the given diagram it is clear that

Ea = E’a + Δ\Delta ΔH

∴\therefore∴ Ea > Δ\Delta ΔH

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