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Chapter 1: Problem 5

Is the separation method used in brewing a cup of coffee best described as distillation, filtration, or chromatography? [Section 1.3\(]\)

Short Answer

Expert verified
The separation method used in brewing a cup of coffee is best described as filtration. This is because coffee brewing involves passing hot water through ground coffee beans and a filter that allows only the liquid (coffee) to pass through while retaining the solid coffee grounds. Distillation and chromatography do not accurately represent the process of brewing coffee.

Step by step solution

01

Understand distillation

Distillation is a separation technique that relies on the differences in boiling points of components in a mixture. It involves heating the mixture until a component evaporates, then collecting and condensing the vapor back into a liquid. This method would not be appropriate for brewing coffee, as it does not involve the separation of components based on their boiling points.
02

Understand filtration

Filtration is a separation technique that separates solid particles from a liquid or gas by passing the mixture through a porous medium, allowing only the fluid to pass through. The solid particles are trapped and separated from the fluid. For brewing coffee, it involves passing hot water through ground coffee beans, with the help of a filter that allows only the liquid (coffee) to pass through while retaining the solid coffee grounds.
03

Understand chromatography

Chromatography is a separation technique that involves the partitioning of components between a mobile phase and a stationary phase. The mobile phase moves through the stationary phase, and components with greater affinity to the stationary phase move slower, leading to their separation. Although chromatography is a powerful technique for separating various components of a mixture, it is not relevant to the process of brewing coffee.
04

Identify the most appropriate separation method

By analyzing each of the given separation methods, we determine that filtration is the most appropriate method to describe the separation process used in brewing a cup of coffee. Distillation and chromatography do not accurately represent the process of brewing coffee. So, the separation method used in brewing a cup of coffee is best described as filtration.

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