Question

Water chemist determine that for effective ammonia removal, the wastewater should be maintained at a minimum pH of 8.93, so that 30% of nitrogen will be present as NH3. A chemical engineer proposes to add 10^-3 mols of NaHCO3 per liter of wastewater to bring the pH to the desired level. Calculate the pH of wastewater treated this way to determine whether the engineer is right.

Answer 1

From the litera ture itwas tound Conntant Cka) 6 NaHeo ia the diso ciahm 5.X1O1 Now NaHeo dimoeiates im coaterr as Loeloo Ka H 3 t+ as here Ka Che7 and are the eomeentra tisns1 H Lea Itt co2amd Norw im equation (1) LAT) = Dea CH+J2 So Ka D+eg- Cep(5.6x10 16 Malea/Liten molao /Liter 2.366 X10 G.626 Pt.626 30 He desirePH o mot mrenela So the corO neen coad