if you need to prepare a buffer solution at pH 7.4 from a weak base/ conjugate...

if you need to prepare a buffer solution at pH 7.4 from a weak base/ conjugate acid buffer system which buffer system would you pick and why?

Expert Solution

queen_honey_blossom answered 2 years ago

The pH of a 0.392 M solution of the conjugate base, A-, of a weak acid,...

The pH of a 0.392 M solution of the conjugate base, A-, of a weak acid, HA, is 11.60. What is the Kb for A-? Please show work

A) Design a buffer that has a pH of 9.93 using one of the weak base/conjugate...

A) Design a buffer that has a pH of 9.93 using one of the weak base/conjugate acid systems shown below. Weak Base Kb Conjugate Acid Ka pKa CH3NH2 4.2×10-4 CH3NH3+ 2.4×10-11 10.62 C6H15O3N 5.9×10-7 C6H15O3NH+ 1.7×10-8 7.77 C5H5N 1.5×10-9 C5H5NH+ 6.7×10-6 5.17 How many grams of the chloride salt of the conjugate acid must be combined with how many grams of the weak base, to produce 1.00 L of a buffer that is 1.00 M in the weak base? grams...

Design a buffer that has a pH of 6.55 using one of the weak acid/conjugate base...

Design a buffer that has a pH of 6.55 using one of the weak acid/conjugate base systems shown below. Weak Acid Conjugate Base Ka pKa HC2O4- C2O42- 6.4 × 10-5 4.19 H2PO4- HPO42- 6.2 × 10-8 7.21 HCO3- CO32- 4.8 × 10-11 10.32 How many grams of the sodium salt of the weak acid must be combined with how many grams of the sodium salt of its conjugate base, to produce 1.00 L of a buffer that is 1.00 M...

Design a buffer that has a pH of 4.86 using one of the weak acid/conjugate base...

Design a buffer that has a pH of 4.86 using one of the weak acid/conjugate base systems shown below. Weak Acid Conjugate Base Ka pKa HC2O4- C2O42- 6.4×10-5 4.19 H2PO4- HPO42- 6.2×10-8 7.21 HCO3- CO32- 4.8×10-11 10.32 How many grams of the potassium salt of the weak acid must be combined with how many grams of the potassium salt of its conjugate base, to produce 1.00 L of a buffer that is 1.00 M in the weak base? grams potassium...

Design a buffer that has a pH of 8.25 using one of the weak base/conjugate acid...

Design a buffer that has a pH of 8.25 using one of the weak base/conjugate acid systems shown below. Weak Base Kb Conjugate Acid Ka pKa CH3NH2 4.2×10-4 CH3NH3+ 2.4×10-11 10.62 C6H15O3N 5.9×10-7 C6H15O3NH+ 1.7×10-8 7.77 C5H5N 1.5×10-9 C5H5NH+ 6.7×10-6 5.17 How many grams of the chloride salt of the conjugate acid must be combined with how many grams of the weak base, to produce 1.00 L of a buffer that is 1.00 M in the weak base? grams chloride...

A) Why does a buffer solution require a weak acid/base conjugate pair, as opposed to a...

A) Why does a buffer solution require a weak acid/base conjugate pair, as opposed to a strong acid, and its conjugate? A strong acid will completely dissociate, suggesting that the conjugate base is really weak and will not neutralize any additional H+ ions. A strong acid will completely dissociate, suggesting that the conjugate base is really strong and will not neutralize any additional H+ ions. A strong acid will only partially dissociate, suggesting that the conjugate base is really weak...

Calculation of Molar Ratios of Conjugate Base to Weak Acid from pH For a weak acid...

Calculation of Molar Ratios of Conjugate Base to Weak Acid from pH For a weak acid with a pKa of 6.0, calculate the ratio of conjugate base to acid at a pH of 5.0. Choice of Weak Acid for a Buffer Which of these com-pounds would be the best buffer at pH 5.0: formic acid (pKa 5 3.8), acetic acid (pKa 5 4.76), or ethylamine (pKa 5 9.0)? Briefly justify your answer. please show work thank you will rate.

A buffer solution contains both a weak acid (HA) and its conjugate base (A-) so buffers...

A buffer solution contains both a weak acid (HA) and its conjugate base (A-) so buffers do not have large changes in pH after addition of a small amount of strong acid or strong base. What is the pH of 500.0 mL of a buffer composed of acetic acid (0.300 moles) and sodium acetate (0.200 moles) before and after addition of solid sodium hydroxide (5.84 g)? Assume no change in volume with addition of NaOH. pKa = 4.756 for acetic...

A buffer is prepared by combining a weak acid or base with its conjugate form. A...

A buffer is prepared by combining a weak acid or base with its conjugate form. A buffer is made using 0.1 M KH2PO4 and 0.1 M K2HPO4. Which component of the buffer is the acid and A)which is the conjugate base? B)write the equation for the reaction between the buffer and the strong acid,HCL? C)write the equation for the reaction between the buffer and the strong base,NaOH? d)if the pKa of the weak acid is 7.21, using the Henderson Hasselbach...

A. Design a buffer that has a pH of 10.20 using one of the weak base/conjugate acid systems shown below.

A. Design a buffer that has a pH of 10.20 using one of the weak base/conjugate acid systems shown below. Weak Base Kb Conjugate Acid Ka pKa CH3NH2 4.2×10-4 CH3NH3+ 2.4×10-11 10.62 C6H15O3N 5.9×10-7 C6H15O3NH+ 1.7×10-8 7.77 C5H5N 1.5×10-9 C5H5NH+ 6.7×10-6 5.17 How many grams of the chloride salt of the conjugate acid must be combined with how many grams of the weak base, to produce 1.00 L of a buffer that is 1.00 M in the weak base?...

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