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Consider the reaction of NH3 with water: NH3 + H2O ↔ NH4++ OH- (Kb=Kw/Ka) and also NH4+ H2O ↔ NH3 +...

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Chemistry

Consider the reaction of NH3 with water:
NH3 + H2O ↔NH4++ OH-
(Kb=Kw/Ka)

and also
NH4+ H2O ↔NH3 + H3O+ (Ka = 5.70×10-10)

Including the ICE Tables:

a) Find the pH of 50.00 mL of 0.200M NH3 after the addition of45.00 mL of 0.200M HCl.

b) Find the pH of 50.00 mL of 0.200M NH3 after the addition of50.00 mL of 0.200M HCl.

c) Find the pH of 50.00 mL of 0.200M NH3 after the addition of55.00 mL of 0.200M HCl.  

Answer & Explanation Solved by verified expert
3.8 Ratings (527 Votes)
a mmoles of NH3 50 x 02 10 mmoles of HCl 45 x 02 90 NH3 HCl NH4Cl 10 90 0 9 9 9 1 0 9 pH pKa log conjugate base acid    See Answer
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