For the reaction NH4Cl (s)→NH3 (g)  + HCl (g) at 25°C, ΔH = 176 kJ/moland ΔS = 0.285 kJ/(mol - K). What is the ΔG, and will this reaction be spontaneous in the forward direction?

169 kJ/mol; no

-91 kJ/mol; yes

91 kJ/mol; no

91 kJ/mol; yes

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

wanswer:

explanation: