The best buffer system with a pH = 7.20 is to be identified amongst the given pair of substances. For the best buffer system, the ratio of the masses of the buffer components that would be required to make the buffer is to be calculated. HC 2 H 3 O 2 /KC 2 H 3 O 2 HClO 2 /KClO 2 NH 3 /NH 4 Cl HClO/KClO

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In addition to the separation techniques used in this lab (magnetism, evaporation, and filtering), there are other commonly used separation techniques. Some of these techniques are:Distillation – this process is used to separate components that have significantly different boiling points. The solution is heated and the lower boiling point substance is vaporized first. The vapor can be collected and condensed and the component recovered as a pure liquid. If the temperature of the mixture is then raised, the next higher boiling component will come off and be collected. Eventually only non-volatile components will be left in the original solution.Centrifugation – a centrifuge will separate mixtures based on their mass. The mixture is placed in a centrifuge tube which is then spun at a high speed. Heavier components will settle at the bottom of the tube while lighter components will be at the top. This is the technique used to separate red blood cells from blood plasma.Sieving – this is…

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Chapter 17, Problem 57E

Interpretation Introduction

Interpretation: The best buffer system with a pH = 7.20 is to be identified amongst the given pair of substances. For the best buffer system, the ratio of the masses of the buffer components that would be required to make the buffer is to be calculated.

HC₂H₃O₂/KC₂H₃O₂

HClO₂/KClO₂

NH₃/NH₄Cl

HClO/KClO

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In addition to the separation techniques used in this lab (magnetism, evaporation, and filtering), there are other commonly used separation techniques. Some of these techniques are:Distillation – this process is used to separate components that have significantly different boiling points. The solution is heated and the lower boiling point substance is vaporized first. The vapor can be collected and condensed and the component recovered as a pure liquid. If the temperature of the mixture is then raised, the next higher boiling component will come off and be collected. Eventually only non-volatile components will be left in the original solution.Centrifugation – a centrifuge will separate mixtures based on their mass. The mixture is placed in a centrifuge tube which is then spun at a high speed. Heavier components will settle at the bottom of the tube while lighter components will be at the top. This is the technique used to separate red blood cells from blood plasma.Sieving – this is…

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