When solid ammonium chloride is put in a reaction vessel at 323 K, the equilibrium concentrations of both ammonia and hydrogen chloride are found to be 0.0660 mol/L. NH4Cl (s) NH3 (g) + HCl (g). How would you Calculate Keq?

Question

When solid ammonium chloride is put in a reaction vessel at 323 K, the equilibrium concentrations of both ammonia and hydrogen chloride are found to be 0.0660 mol/L. NH4Cl (s) <--> NH3 (g) + HCl (g).  How would you Calculate Keq?

Vocaloid · Answer

for a generic equation aA + bB --> cC + dD

Keq = [C]^c * [D]^d / ([A]^a * [ B]^b)

important note: solids and liquids are excluded from this equation (so in this case, NH4Cl does not get included)

use this to write the Keq for this reaction, then plug in the appropriate concentrations from the problem