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Thermodynamics question

2020 · 6 Sep · Shift 2 · Q5
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  5. /2020 · 6 Sep · Shift 2 · Q5

Thermodynamics question

2020 · 6 Sep · Shift 2 · Q5

JEE MainChemistryThermodynamicsMCQ+4 / −1
For a reaction, 4MMM(s) + nO2O_2O2​(g) →\to→ 2M2OnM_2O_nM2​On​(s) the free energy change is plotted as a function of temperature. The temperature below which the oxide is stable could be inferred from the plot as the point at which :
  1. A
    the free energy change shows a change from negative to positive value
  2. B
    the slope changes from positive to negative
  3. C
    the slope changes from negative to positive
  4. D
    the slope changes from positive to zero
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