P=12 bars and T = 36 ^oC

Since P = 12 and T = 36 are both round values, there are two ways to answer this:

• Go to the pressure table at P = 12 bars.
• Compare T = 36 to T_boil = 30.94. 
• Since T > T_boil ammonia is superheated vapor.

Or

• Go to the temperature table at T = 36
• Compare P = 12 to P^sat = 13.90. 
• Since P < P^sat ammonia is superheated vapor.