Using the table of the weak base below, you have chosen Methylamine as your weak base in the buffer solution. You have already added enough of the conjugate acid salt to make the buffer solution concentration at 0.48 M in this salt. The desired pH of the buffer should be equal to 9.75. Values of K, for Some Common Weak Bases Conjugate Acid Name Formula Kb Ammonia NH3 NH4+ 1.8 x 10-5 CH;NH,* 4.38 x 10-4 Methylamine CHẠNH, Ethylamine C₂H5NH₂ C₂H5NH3+ 5.6 x 10-4 Aniline CH;NH, CH;NH;* 3.8 x 10-10 Pyridine C5H5N CH;NH* 1.7 x 10-⁹ 1. Compute the poH of the buffer solution. (answer in 2 decimal places)

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Chapter15: Acid-base Equilibria
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Problem 7ALQ: You have a solution of the weak acid HA and add some HCl to it. What are the major species in the...
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Using the table of the weak base below, you have chosen Methylamine as your weak base in the buffer solution. You have already added enough of the
conjugate acid salt to make the buffer solution concentration at 0.48 M in this salt. The desired pH of the buffer should be equal to 9.75.
Values of K, for Some Common Weak Bases
Conjugate
Acid
Name
Formula
Kb
NH4+
1.8 x 10-5
Ammonia
Methylamine
NH3
CH;NH,
CH3NH3 +
4.38 x 10-4
C₂H5NH₂
C₂H5NH3 +
5.6 x 10-4
Ethylamine
Aniline
CH;NH,
C6H5NH3 +
3.8 x 10-10
Pyridine
C,H,N
CşH;NH+
1.7 x 10-⁹
1. Compute the poH of the buffer solution. (answer in 2 decimal places)
Transcribed Image Text:Using the table of the weak base below, you have chosen Methylamine as your weak base in the buffer solution. You have already added enough of the conjugate acid salt to make the buffer solution concentration at 0.48 M in this salt. The desired pH of the buffer should be equal to 9.75. Values of K, for Some Common Weak Bases Conjugate Acid Name Formula Kb NH4+ 1.8 x 10-5 Ammonia Methylamine NH3 CH;NH, CH3NH3 + 4.38 x 10-4 C₂H5NH₂ C₂H5NH3 + 5.6 x 10-4 Ethylamine Aniline CH;NH, C6H5NH3 + 3.8 x 10-10 Pyridine C,H,N CşH;NH+ 1.7 x 10-⁹ 1. Compute the poH of the buffer solution. (answer in 2 decimal places)
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