Question

Complete the equations for the following equilibria, calculate Kc for each reaction and express its value in proper scientific notation.

Complete the equations for the following equilibria, calculate Kc for each reaction and express its value in proper scientific notation.

Answer 1

For NH3, pK,-35 NH, 근NH,+H' Ka=10-35 For NH4,pK 9.25 NHİ 근NH,+H' K,-10°25 For H2O. pK, 15.74 (a) (b) For H,O, pK,=1.74 H,O- H,0+H' Ka = 10.74 (d) (a) Now, for therevers e reaction, NH3-H+ adding with equation (c) -NHİ Kl: -925 10 15.74 K109 3.24x10 NH4-11 OH Hence, K = 3.24x10 NH (b)For thereaction. NH3-H20 -NH24H,O" For thereaction. H20+H'근H,O" Ka-174 adiing with equation (a) NH, H,O NH 1035 x 1.82x10-37