1. In one step, ammonium chloride (NH4Cl) was added to lower the
blood pH. The ammonium ion is what acts as the acid. The chloride
ion does not have any acid/base properties.
a. Why is the ammonium ion used as the acid source instead of
HCl?
b. Why is NH4Cl used instead of some other ammonium compound
(such as NH4NO3 or NH4I)?
Calculate the OH- concentration and pH of a 3.7×10-3M aqueous
solution of sodium cyanide, NaCN. Finally, calculate the CN-
concentration. Ka (HCN) = 4.9×10-10.
Ammonia rapidly reacts with hydrogen chloride, making ammonium
chloride. Calculate the number of grams of excess reactant when
6.16 g of NH3 reacts with 4.46 g of HCl
What is the pH of a 0.055 M solution of sodium cyanide
(NaCN)? The Ka value for hydrocyanic acid (HCN)
is 6.2 x 10-10.
Select one:
a. 10.97
b. 10.08
c. 8.77
d. 3.03
e. 5.23
Using a pH 10 buffer solution of aqueous ammonia and aqueous
ammonium chloride, for what reason are we buffering the solution to
be basic? What would happen to the structure of EDTA without a
buffer? Explain how this would affect titration.
How much does the pH of 20.0 mL of a 0.75 M ammonium chloride
(NH4Cl) solution change upon the addition of 15.0 mL of 1.0 M NaOH?
Ka for ammonia (NH4+) 5.69 x 10-10?