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How many moles are in 4.5X1028 molecules of sodium fluoride NaF?
4,5.10e28 molecules of sodium fluoride NaF are equal to 0,745.10e5 moles.
What is the pH of 0.89 M NaF?
First recognize that NaF is the salt of a strong base (NaOH) and a weak acid (HF), so the pH will be alkaline. Next, look at the hydrolysis of NaF: NaF + H2O ---> NaOH + HF, or looking at it another way.... F^- + H2O ---> HF + OH- and here F^- acts as a base, so we need the Kb for NaF and that will be the inverse of the Ka for HF. The Ka for HF is 6.6x10^-4, so Kb = 1x10^-14/6.6x10^-4 = 1.5x10^-11. Now, Kb = [HF][OH-]/[F-] = (x)(x)/(0.89) = 1.5x10^-11 x^2 = 1.3x10^-11 x = 3.6x10^-6 = [OH-] pOH = -log 3.6x10^-6 = 5.44 pH = 8.6 (note the pH is alkaline, as expected)
How do you make 2ppm solution of NaF?
To prepare a 2 ppm (parts per million) solution of sodium fluoride (NaF), dissolve 2 milligrams of NaF in enough distilled water to make a total volume of 1 liter. First, accurately weigh 2 mg of NaF using a balance, then add it to a volumetric flask or a clean container, and fill with distilled water up to the 1-liter mark. Mix thoroughly to ensure the NaF is completely dissolved.
Is NaF an inert solvent?
NaF can be said as inert because +1 and -1 valencies cancells each other................ so in that way we can say , it is Neutral........
What kind of bond is used in NaF?
Ionic bond is used in NaF. Sodium (Na) is a metal and fluorine (F) is a non-metal, so they form an ionic bond where electrons are transferred from sodium to fluorine.
Is NaF acidic basic or a salt?
It is BASIC because, if combined with water, it produces a strong base: NaOH
What is the sodium salt of HF?
NaF
What is the the compound naf?
NaF is Sodium fluoride. It is a salt and dissolves in water. It is white in color.
Is NaF a salt?
Yes, NaF is a salt composed of the elements sodium (Na) and fluorine (F). It is known as sodium fluoride.
Is sodium flouride acid base or salt?
NaF is a salt.
Is NaF a strong base?
No, Na+ is neutral and F- is very weakly basic, not acidic.
Is naf a word?
Naf is not in the Oxford English dictionary.
Is NaF and NaOH a buffer?
No, NaF and NaOH do not form a buffer solution together as a buffer solution requires a weak acid and its conjugate base, or a weak base and its conjugate acid. NaF is the salt of a weak acid (hydrofluoric acid) and a strong base (NaOH), so it does not act as a buffer. NaOH is a strong base and cannot act as a buffer solution by itself.
How many moles of NaF are in 34.2 grams of a 45.5 percent by mass NaF solution?
To determine the number of moles of NaF in 34.2 grams of a 45.5% by mass solution, first calculate the mass of NaF in the solution. Mass of NaF = 45.5% of 34.2 grams. Then convert the mass of NaF to moles using the molar mass of NaF. Finally, divide the mass of NaF by its molar mass to get the number of moles.
What is the conjugate acid of NaF?
The conjugate acid of NaF is HF (hydrofluoric acid). When NaF accepts a proton, it forms HF.
How do you pronounce naphtali?
Naf-'t'-lee or Naf-'t'-lie
What is the scientific name for NaF?
The scientific name for NaF is sodium fluoride.
