To prepare a fluoride ion stock solution, a 0.5273 g sample of NaF standard was dissolved with deionized water in a beaker. The sample was quantitatively transferred to a 250.0 mL volumetric flask and diluted to the mark using deionized water. What is the concentration of fluoride ion in this stock solution in ppm(mg/L)? 1 954.3 ppm 2 238.6 ppm 3 466.2 ppm 4 1000 ppm
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Step 1
First, we need to find the moles of NaF in the 0.5273 g sample. The molar mass of NaF is (22.99 g/mol for Na) + (19.00 g/mol for F) = 41.99 g/mol. Show more…
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