Chemistry

Chemistry, 20.10.2019 02:30, DivineMemes420

An acid has an acid dissociation constant of 2.8 10–9. what is the base dissociation constant of its conjugate base?

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Chemistry, 30.06.2019 20:00, Caixiayang3613

The acid-dissociation constant, ka, for benzoic acid is 6.5 × 10-5. calculate the base-dissociation constant, kb, for the conjugate base of benzoic acid. a. 9.3 × 105 b. 2.5 × 10-6 c. 6.5 × 109 d. 1.5 × 10-10

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Chemistry, 31.08.2019 00:00, lovemyboys0404pc662e

The base-dissociation constant, kb, for pyridine, c5h5n, is 1.4x10-9 the acid-dissociation constant, ka, for the pyridinium ion, (pyridine's conjugate acid, is

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Chemistry, 07.10.2019 07:30, Theresab2021

An acid has an acid dissociation constant of 2.8x10^-9. what is the base dissociation constant of its conjugate base? 2.8x 10^-23 3.6x10^-6 2.8x10^5 3.6 x10^22

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Chemistry, 15.10.2019 18:10, drandbone92

Most buffers are a mixture of a weak acid and its conjugate base. buffers resist changes in ph when small amounts of acid or base are added. the effective ph range of a buffer depends on the pka of the acid and the relative concentrations of the acid, ha, and its conjugate base, a−. the equation for the acid dissociation of a weak acid is: ha(aq) + h2o(l) ⇌ a−(aq) + h3o+(aq) the equation for the acid dissociation constant is: ka equals concentration of h3o+ times concentration of a− divided by concentration of ha rearrange the equation and then substitute in pka = −log(ka) and ph = −log(h3o+): ph equals pka plus log of the result of the concentration of a− divided by concentration of ha this expression is the henderson-hasselbalch equation and is useful for determining the ph of a buffer solution. a buffer solution has 0.620 m hf and 0.710 m f−. if 0.025 moles of hcl is added to 325 ml of the buffer solution, what is the ph after the addition? the pka of hydrofluoric acid is 3.16.

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