MCQ
For a spontaneous change, free energy change $\Delta G$ is
- APositive
- ✓Negative
- CZero
- DCan be positive or negative
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$C$ $ (graphite) $ $ + {O_2}(g) \to C{O_2}(g);\,\Delta H = - 393.5$
If the graphite is made of diamond then the above figure is $\Delta H$.......$kJ$