Which one of the following reactions will be spontaneous at high temperature, but not spontaneous at low temperature? 2 NI3(s) -> N2(g) + 3 I2(s) NH3(g) -> NH3(l) Pb(s) + 3 N2(g) -> Pb(N3)2(s) NH4NO3(s) -> NH4+(aq) + NO3-(aq) 2 Li(g) -> Li2(g)
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A reaction is spontaneous when ΔG is negative. The Gibbs free energy change can be influenced by both enthalpy (ΔH) and entropy (ΔS) changes, as described by the equation: ΔG = ΔH - TΔS Where: - ΔG = Gibbs free energy change - ΔH = Enthalpy change - ΔS = Entropy Show more…
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