Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
AIIMS 2013
Exam
AIIMS
Year
2013
Subject
Chemistry
Chapter
Thermodynamics (C)

AIIMS 2013 · Chemistry · Thermodynamics (C)

Energy of activation of forward reaction for an endothermic process...

Energy of activation of forward reaction for an endothermic process is 50 kJ50 \mathrm{~kJ}. If enthalpy change for forward reaction is 20 kJ20 \mathrm{~kJ} then enthalpy change for backward reaction will beEnergy of activation of forward reaction for an endothermic process is 50 ~kJ . If enthalpy change for forward reaction

Options

  1. A30 kJ30 \mathrm{~kJ}
  2. B20 kJ20 \mathrm{~kJ}
  3. C70 kJ70 \mathrm{~kJ}
  4. D50 kJ50 \mathrm{~kJ}

Correct answer

A. 30 kJ30 \mathrm{~kJ}

Step-by-step solution

Energy of activation of forward reaction for an endothermic process is 50 ~kJ . If enthalpy change for forward reaction
For endothermic reaction, Ea,b=Ea,f−ΔH∘E_{a, b}=E_{a, f}-\Delta H^{\circ} =50 kJ−20 kJ=30 kJ=50 \mathrm{~kJ}-20 \mathrm{~kJ}=30 \mathrm{~kJ}
Practice Thermodynamics (C) on Quantrex Academy →

More from Thermodynamics (C)

A certain organic solvent has Δ H\_vap = 28.50\ kJ mol^ -1 and Δ S\_vap = 88.2\ J K^ -1 \… MHT CET Medical 2026Which of the following statements regarding spontaneous process is NOT true? MHT CET Medical 2026Calculate Δ H for a reaction, 2X_ (g) + Y_ (g) arrow 2Z_ (g) at 298 K if Δ U = -10.5 kJ… MHT CET Medical 2026500\ mL of nitrogen gas and 750\ mL hydrogen gas were allowed to react at 1\ bar pressure… MHT CET Medical 2026The relationship between Δ H and Δ U for the reaction, PCl_3(g) + Cl_2(g) arrow PCl_5(g)… MHT CET Medical 2026What would be the heat released in kJ when 450\ cm^3 of 0.02\ M\ H_2SO_4 is mixed with… MHT CET Medical 2026Identify from following reactions that it takes place with Δ H = Δ U . MHT CET Medical 2026Calculate the work done in the following reaction at 300\ K , A(g) + B(g) = 2C(g) [R =… MHT CET Medical 2026 Full Thermodynamics (C) list All AIIMS PYQs