The equilibrium constant for the reaction AgBr(s) Ag +(aq) + Br – (aq) is the solubility product constant, K sp = 7.7 × 10 –13 at 25°C. Calculate ΔG for the reaction when [Ag +] = 1.0 × 10 –2 M and [Br –] = 1.0 × 10 –3 M. Is the reaction spontaneous or nonspontaneous at these concentrations?

the equation that correctly represent the reaction for formation of ammonia is

n2+ 3h2 → 2nh3 (answer d)

1 mole of nitrogen gas (n2) react with 3 moles of hydrogen gas (h2) to form 2 moles of ammonia ( nh3). this is in a process known as haber process were iron is used as a catalyst and reaction take place that a higher temperature and pressure. the process is exothermic hence energy is released.