?Without doing any calculations, predict the sign of ?H for each of the following
Chapter 5, Problem 5.81(choose chapter or problem)
Without doing any calculations, predict the sign of ΔH for each of the following reactions:
(a) \(\mathrm{NaCl}(s) \longrightarrow \mathrm{Na}^{+}(g)+\mathrm{Cl}^{-}(\mathrm{g})\)
(b) \(2 \mathrm{H}(g) \longrightarrow \mathrm{H}_{2}(g)\)
(c) \(\mathrm{Na}(g) \longrightarrow \mathrm{Na}^{+}(g)+\mathrm{e}^{-}\)
(d) \(\mathrm{I}_{2}(s) \longrightarrow \mathrm{I}_{2}(l)\)
Text Transcription:
NaCl(s) longrightarrow Na^+(g)+Cl^-(g)
2H(g) longrightarrow H_2(g)
Na(g) longrightarrow Na^+(g)+e^-
I_2(s) longrightarrow I_2(l)
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