A) The standard free energy of formation of elements is zero
B) A process that leads to increase in free energy will be spontaneous
C) A process accompanied by decrease in entropy will be non-spontaneous under normal conditions
D) Enthalpy of combustion is always negative
Correct Answer: B
Solution :
\[\Delta G\]gives a criteria for spontaneity at constant pressure and temperature. (I) If\[\Delta G\]is negative (< 0), the process is spontaneous. (II) If\[\Delta G\]is positive (> 0), the process is non-spontaneous.
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