Part A Submit MyAnswers GiveUp Correct Part B For the best system, calculate the

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Part A

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Part B

For the best system, calculate the ratio of the masses of the buffer components required to make the buffer.

Express your answer using two significant figures.

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Part A Which of the following buffer systems would be the best choice to create a buffer withpH= 9.00? {rm HF}/{rm KF} {rm{HNO}}_2 / {rm{KNO}}_2 {rm{NH}}_3 /{rm{NH}}_4 {rm{Cl}} {rm HClO}/{rm KClO} Part B For the best system, calculate the ratio of the masses of the buffer components required to make the buffer. Express your answer using two significant figures.

Explanation / Answer

HF/KF; HNO2/KNO2; HClO/KClO are all weak acid systems. They would give a buffer with pH < 7.0.

The only system which will give a basic buffer solution (pH > 7.0) is the NH3/NH4Cl since NH3 is a weak base.

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