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Which of the following when added to a 1.0 L solution containing 0.10 M NaF and 0.20 M HF will result in a solution where pH = pKa for HF? Ka for HF = 7.2 x 104. Show ALL calculations and state your reasoning that led to your answer.
a) 0.050 mol NaOH
b) 0.10 mol NaOH
c) 0.050 mol HCl
d) 0.10 mol HCl
e) 0.20 mol HCl
Experimental procedure, part A. whats is the procedure for preparing 250 mL of 0.0210 M Na2S2O3 for this experiment from a 100 mL volume of standard 0.106 M Na2S2O3?
Don't worry about the concentrations of reagents or the colors resulting precipitates (if any). You don't have to precipitate all ions, just separate them
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