For a spontaneous reaction, is always negative.
The negative sign of indicates that the reaction is favorable thermodynamically. But for determining whether a reaction is fast enough to be useful, temperature should be considered. Therefore, if a process must be carried out at high temperatures to be fast enough to be feasible, must be recalculated at that temperature from the and values for the reaction.
Free energy changes depends upon pressure of the gas. The relationship between free energy changes and pressure of the gas is,
Ask our subject matter experts your homework question and you'll be notified when it's answered.infoQuestions are typically answered within just a few hours. If your question isn't answered within 48 hours we'll credit your question back.