Question- A simple way of raising pH in waste streams is to bubble ammonia gas through the solution. Calculate the TOT NH3 of a solution at pH of 7.9 that has been equilibrated with gas having a partial pressure of NH3(g) in air of 10-2.

NH3(g) <-----> NH3(aq) KH=10-1.77 mol/L

NH4+(aq) + H2O <-------> NH3(aq) + H+(aq) Ka=10-9.25 mol/L

Calculate the amount of ammonia (as TOT NH3 added) necessary to neutralize (pH 7) a waste stream starts as 0.27 M H2SO4.

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