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What is chemical equation when a strong acid is added to a buffer solution containing NaF and HF?
HCl + NaF -> HF + NaCl
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)
What is the compound name for hydofluoric acid?
Hydrofluoric acid is a solution of hydrogen and fluoride mixed with water. Its chemical formula is HF. It is a chemical compound and considered a weak acid but can be heavily corrosive.
What is the balanced equation for na2sio3 plus hf producing h2sif6 plus naf plus h2o?
It's been awhile since I did one of these, but I think it's: Na2SiO3 + 8HF produces H2SiF6 + 2NaF + 3H2O
What is the compound of NaF?
sodium fluoride
What is chemical equation when a strong acid is added to a buffer solution containing NaF and HF?
HCl + NaF -> HF + NaCl
What is the sodium salt of HF?
NaF
What is the effect of adding NaF to a aqueous HF solution-a pH increases b h30 increases c hf increases?
the pH increases
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)
Sodium fluoride reacts with diluted nitric acid?
NaF(aq) + HNO3(aq) ----> NaNO3(aq) + HF(aq)
Why is KSCN neutral while NaF is basic despite the fact that HSCN is a weaker acid than HF?
HSCN is not a weaker acid than HF. The Ka for HSCN is approximately 1.2x10^-1 and that for HF is approximately 7x10^-4, making HSCN considerably stronger than HF. In fact, a solution of KSCN would have a pH very slightly above 7.0, but close to neutral because it is almost a strong acid. A solution of NaF will have a pH that is basic because it is the salt of a strong base and a weak acid.
Can hydrofluoric acid and sodium fluoride function as a buffer?
Yes. HF is an Acid and NaF is a base they both share the common ion effect.
What does sodium and fluorine make?
Sodium fluoride, NaF
What is the compound name for hydofluoric acid?
Hydrofluoric acid is a solution of hydrogen and fluoride mixed with water. Its chemical formula is HF. It is a chemical compound and considered a weak acid but can be heavily corrosive.
Which of the following has the highest boiling point F2 NaF HF ClF?
The compound with the highest boiling point is NaF. This compound is ionic, and has a high boiling point because of the strong attraction between the sodium and fluorine ions that it consists of. On the other hand, the other compounds are all covalent and are held together only by weaker intermolecular forces.
What is the balanced equation for na2sio3 plus hf producing h2sif6 plus naf plus h2o?
It's been awhile since I did one of these, but I think it's: Na2SiO3 + 8HF produces H2SiF6 + 2NaF + 3H2O
What is NaF stand for?
NaF stands for sodium fluoride.
