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Question

Select the incorrect statement:
 
  1. In the decomposition of a metal oxide into oxygen and solid metal, entropy increases

  2. ΔG° vs T graph for the formation of CO2 has negative slope
  3. Decomposition of an oxide is an endothermic change
  4. ΔG° vs T graph for the formation of CO has negative slope.


Solution

The correct option is B
ΔG° vs T graph for the formation of CO2 has negative slope
From the Ellingham diagram it is observed that ΔG° vs Tgraph for formation of CO2 has zero slope.

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