Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
MHT CET 202622 AprilEvening Shift
Exam
MHT CET
Year
2026
Date
22 April
Shift
Evening Shift
Subject
Chemistry
Chapter
Thermodynamics (C)

MHT CET 2026 · 22 April · Evening Shift · Chemistry · Thermodynamics (C)

For a certain reaction, the enthalpy change and entropy change are...

For a certain reaction, the enthalpy change and entropy change are +50+50 kJ and −50-50 J/K respectively at 27^{}^{\circ} C, What is the Gibbs free energy change of reaction?

Options

  1. A−65-65 kJ
  2. B3535 kJ
  3. C−35-35 kJ
  4. D6565 kJ

Correct answer

D. 6565 kJ

Step-by-step solution

Given ΔH=+50 kJ\Delta H = +50 \text{ kJ} and ΔS=−50 J/K=−0.05 kJ/K\Delta S = -50 \text{ J/K} = -0.05 \text{ kJ/K}.

The temperature is T = 27^{}^{\circ}\text{C} = 300 \text{ K}.

Using the Gibbs free energy equation:

ΔG=ΔH−TΔS\Delta G = \Delta H - T\Delta S

Substituting the given values:

ΔG=50−(300)(−0.05)\Delta G = 50 - (300)(-0.05)

ΔG=50+15=65 kJ\Delta G = 50 + 15 = 65 \text{ kJ}

Answer: 6565 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 MHT CET Medical PYQs