Capital Process…….
October 17, 2020
Explain the difference of why NH3 (ammonia) is listed as tetrahedral for the electron pair arrangement BUT the molecular geometry is trigonal
October 17, 2020

A sample of toothpaste was analyzed for its fluoride content by treating a 250 mg samplewith an ionic strength buffer to extract F- followed by dilution to 100.0 mL. The potentialreading with a fluoride ISE was +150.3 mV. After addition of 10.0 mL of a 50.0 ppm Fstandard,the potential reading became +110.8 mV. Assuming a slope of –58.0 mV for thefluoride ISE, calculate the fluoride content of the toothpaste in %NaF.


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