1.1. Ammonium chloride, NH₄Cl, can dissociate to form ammonia, NH₃, and hydrogen chloride, HCl. 

NH₄Cl (s)    →   NH₃(g)  +   HCl(g)

Explain whether entropy increases or decreases in this reaction. 

1.2. At 298K, ΔH = +176 kJ mol^–1 and ΔS = +285 J mol^–1 K^-1.

 Calculate ΔG for this reaction at 298K.

1.3. Explain whether the reaction is feasible under standard conditions.

1.4. State and explain how the feasibility of the reaction will change with increasing temperature.