For the reaction nh4cl (s) → nh3 (g) + hcl (g) at 25°c, δh = 176 kj/mol and δs = 0.285 kj/(mol-k). what is the δg, and will this reaction be spontaneous in the forward direction?

   The  of the reaction is  91.07  Kj    and the  reaction  is  will  be    Spontaneous   in the  forward direction

      Explanation
  by  use of  ΔG =ΔH- TΔs   formula  calculate for ΔG
ΔG =?
ΔH= 176  kj/mol
Δs= 0.285 kj/mol.k
T= 25 + 273 = 298 K

ΔG  is therefore = 176 - 298 (0.285)= 91.07 Kj

since ΔG  is positive the  reaction   will not  be  spontaneous   in the forward direction