[CNA buffer solution made from HCN and NaCN has a pH of 9.07. If pK, for HOCN is 9.40 , what is the[HCN]in the buffer?(CN ][HCN]%3DThe pK, value for H2S is 7.00. What mole ratio of NaHS to H2S is needed to prepare a buffer with a pH of 6.79?[HS ][H2 S]

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[CN] A buffer solution made from HCN and NaCN has a pH of 9.07. If pK, for HCN is 9.40 , what is the [HCN] in the buffer? [CN] [HCN] The pK, value for H2S is 7.00. What mole ratio of NaHS to H2S is needed to prepare a buffer with a pH of 6.79? [HS ] [H, S]

[CN] A buffer solution made from HCN and NaCN has a pH of 9.07. If pK, for HCN is 9.40 , what is the [HCN] in the buffer? [CN] [HCN] The pK, value for H2S is 7.00. What mole ratio of NaHS to H2S is needed to prepare a buffer with a pH of 6.79? [HS ] [H, S]

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Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

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Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.

Question

[CN
A buffer solution made from HCN and NaCN has a pH of 9.07. If pK, for HOCN is 9.40 , what is the
[HCN]
in the buffer?
(CN ]
[HCN]
%3D
The pK, value for H2S is 7.00. What mole ratio of NaHS to H2S is needed to prepare a buffer with a pH of 6.79?
[HS ]
[H2 S]

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