The name and structure of the alditol formed by reduction of NaBH 4 D-fructose other than the D-sorbitol should be determined. Concept Introduction: The sodium borohydride is a reducing agent, so it reduces the functional group present in the carbohydrate and itself get oxidized. The reduction of aldehyde results in the formation of alcohol because reduction can also be defined as addition of hydrogen atom thus, -CHO group becomes -CH 2 OH after addition of two hydrogen atoms on carbonyl carbon of the aldehydic group.

Question

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 19, Problem 30P

Interpretation Introduction

Interpretation:

The name and structure of the alditol formed by reduction of NaBH4 D-fructose other than the D-sorbitol should be determined.

Concept Introduction:

The sodium borohydride is a reducing agent, so it reduces the functional group present in the carbohydrate and itself get oxidized.

The reduction of aldehyde results in the formation of alcohol because reduction can also be defined as addition of hydrogen atom thus, -CHO group becomes -CH₂ OH after addition of two hydrogen atoms on carbonyl carbon of the aldehydic group.

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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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