solution contains 0.426 M sodium fluoride and 0.326 M hydrofluoric acid. The pH of this solution is
solution contains 0.426 M sodium fluoride and 0.326 M hydrofluoric acid. The pH of this solution...
A buffer solution contains 0.384 M hydrofluoric acid and 0.460 M sodium fluoride. If 0.0183 moles of nitric acid are added to 125 mL of this buffer, what is the pH of the resulting solution ? (Assume that the volume change does not change upon adding nitric acid) pH = ????
A solution contains 0.231 M potassium fluoride and 0.120 M hydrofluoric acid. The pH of this solution is .
A solution contains 0.323 M potassium fluoride and 0.416 M hydrofluoric acid. The pH of this solution is .
A 1 liter solution contains 0.416 M hydrofluoric acid and 0.312 M sodium fluoride. Addition of 0.156 moles of hydrobromic acid will: (Assume that the volume does not change upon the addition of hydrobromic acid.) Raise the pH slightly Lower the pH slightly Raise the pH by several units Lower the pH by several units Not change the pH Exceed the buffer capacity
A buffer solution contains 0.392 M hydrofluoric acid and 0.357 M potassium fluoride . If 0.0229 moles of sodium hydroxide are added to 125 mL of this buffer, what is the pH of the resulting solution? (Assume that the volume does not change upon adding sodium hydroxide.) pH =
A 1 liter solution contains 0.495 M hydrofluoric acid and 0.371 M sodium fluoride. Addition of 0.408 moles of hydrobromic acid will: (Assume that the volume does not change upon the addition of hydrobromic acid.) A. Raise the pH slightly B.Lower the pH slightly C. Raise the pH by several units D. Lower the pH by several units E. Not change the pH F. Exceed the buffer capacity
A 1 liter solution contains 0.244 M hydrofluoric acid and 0.325 M sodium fluoride. Addition of 0.061 moles of calcium hydroxide will: (Assume that the volume does not change upon the addition of calcium hydroxide.) Raise the pH slightly Lower the pH slightly Raise the pH by several units Lower the pH by several units Not change the pH Exceed the buffer capacity
a.The pH of an aqueous solution of 0.427 M hypochlorous acid is---- b.The pH of an aqueous solution of 0.426 M pyridine (a weak base with the formula C5H5N) is----- c.A solution contains 0.404 M sodium fluoride and 0.286 M hydrofluoric acid. The pH of this solution is--------
1) A buffer solution contains 0.346 M hydrofluoric acid and 0.392 M sodium fluoride . If 0.0239 moles of potassium hydroxide are added to 125 mL of this buffer, what is the pH of the resulting solution ? (Assume that the volume does not change upon adding potassium hydroxide. ) pH = _______ 2) A student needs to prepare a buffer made from HF and KF with pH 2.904. If Ka for HF is 7.2x10^-4, what ratio of [HF]/[F-] is...
A) A solution contains 0.424 M sodium cyanide and 0.294 M hydrocyanic acid. The pH of this solution is .B) A solution contains 0.301 M potassium fluoride and 0.204 M hydrofluoric acid. The pH of this solution is .