A. What is the Gibbs free energy for this reaction at 298 K?

2NH3(g) N2(g) + 3H2(g)

ΔH = 91.8 kJ

ΔS = 0.1987 kJ/K

Is the reaction spontaneous at 298 K (room temperature)? (3 points)

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)

Which of the following signs of a chemical reaction are observed in the reaction of potassium with water? precipitate formed temperature change smell produced gas produced color change

When would a bouncy ball have the most potential energy