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Thermodynamics question

2010 · Q69
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Thermodynamics question

2010 · Q69

NEETChemistryThermodynamicsMCQ+4 / −1
Match List I (Equations) with List II (Type of processes) and select the correct option.

List I List II
Equations Type of processes
A. Kp > Q (i) Non- spontaneous
B. Δ\DeltaΔGo < RT ln Q (ii) Equilibrium
C. Kp = Q (iii) Spontaneous and
endothermic
D. T > ΔHΔS{{\Delta H} \over {\Delta S}}ΔSΔH​ (iv) Spontaneous
  1. A
    A - (i), B - (ii), C - (iii), D - (iv)
  2. B
    A - (iii), B - (iv), C - (ii), D - (i)
  3. C
    A - (iv), B - (i), C - (ii), D - (iii)
  4. D
    A - (ii), B - (i), C - (iv), D - (iii)
View written solutionFree

Correct answer: C

When Kp > Q, rate of forward reaction > rate of backward reaction.

∴\therefore∴ Reaction is spontaneous.

When Δ\Delta ΔGo < RT ln Q, Δ\Delta ΔGo is positive, reverse reaction is feasible, thus reaction is non spontaneous.

When Kp = Q, rate of forward reaction > rate of backward reaction.

∴\therefore∴ Reaction is in equilibrium.

When TΔ\Delta ΔS > Δ\Delta ΔH, Δ\Delta ΔG will be negative only when Δ\Delta ΔH = +ve.

∴\therefore∴ Reaction is spontaneous and endothermic.

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