Select correct statement

Options

A. In the decomposition of an oxide into oxygen and solid`//` liquid metal, entropy increases.
B. Decomposition of an oxide is an endothermic change.
C. To make `DeltaG^(@)` negative, temperature should be high enough so that `T DeltaS^(@) gt DeltaH^(@)`.
D. All are correct statements.

Answer

4

Explanation

`(1)` When the oxide undergoes a phase change, there will be an increase in the entropy of the oxide.
`(2)` It is true statements, `HgOoverset(Delta)rarrHg+1//2O_(2)`
`(3)` For a reduction process the change in the free energy `, DeltaG^(@)` must be negative and to make `DeltaG^(@)` negative temperature should be high enough so that `T Delta S^(@) gtDeltaH^(@)`.