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Social ScienceWhich of the following buffer systems would be the best choice to create a buffer with pH = 7.1?HC2H3O2/KC2H3O2HClO2/KClO2NH3/NH4ClHClO/KClOFor the best system, calculate the ratio of the masses of the buffer components required to make the buffer.
| HC2H3O2/KC2H3O2 |
| HClO2/KClO2 |
| NH3/NH4Cl |
| HClO/KClO |
For the best system, calculate the ratio of the masses of the buffer components required to make the buffer.
Expert Answer
The best buffer system to create pH of 7.1 is determined as follows,
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pK of HCH = 4.75 pK of HCIO2 1.96 pK of NH 9.25 a pK of HCIO= 7.53
The HClO pKa value is close to given pH range hence, HClO/KClO serves as the best choic...
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A pH pKa log HA here, HCIO pKа 3D 7.53 AConjugate base ClO HA weak acid = HC1O [сю ] НСЮ] ClO 7.1 7.53 log [CIo [НСIO)] log - 7.1-7.53 ClO log [HСю] =-0.43 CIO [Нсю] 0.372
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