1.

For a reaction 4M(s) + nO2(g)→ 2M2On(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) the slope changes from positive to zero (2) the free energy change shows a change from negative to positive value (3) the slope changes from negative to positive (4) the slope changes from positive to negative

Answer»

Correct answer is (2) The free energy change shows a change from negative to positive value



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