Which of the following seperation methods relies on the differences in the boiling points? a) Fractional distillation and filtration b) fractional distillation and simple distillation C) paper chromatography d) filtration and simple distillation
b) fractional distillation and simple distillation
The separation method that relies on the differences in boiling points is b) fractional distillation and simple distillation.
The separation method that relies on the differences in boiling points is b) fractional distillation and simple distillation.
To understand why, let's break down the options:
a) Fractional distillation and filtration: Filtration is a method used to separate solid particles from a liquid or gas mixture, which does not involve boiling points. Fractional distillation, on the other hand, is a separation technique that utilizes the differences in boiling points of the components in a liquid mixture. So, while fractional distillation is applicable, filtration is not.
b) Fractional distillation and simple distillation: Both fractional distillation and simple distillation rely on the differences in boiling points. In simple distillation, a liquid mixture is heated to vaporize the component with the lowest boiling point, which is then condensed and collected separately. Fractional distillation is a more precise technique used to separate mixtures with components having similar boiling points.
c) Paper chromatography: Paper chromatography is a separation technique that relies on the differences in solubility and affinity of components in a mixture. It involves the movement of the components across a stationary phase (paper) based on their solubility, rather than boiling points.
d) Filtration and simple distillation: Similar to option a), filtration is not based on boiling points but rather on particle size. However, simple distillation does rely on the differences in boiling points.
To summarize, the correct answer is b) fractional distillation and simple distillation because both methods involve separating components based on their boiling points.