A teacher makes the following statement. "Gasoline boils at a relatively low temperature (about 150°C). The kerosene is removed at around 200°C, followed by diesel oil at 300°C and fuel oil at around 370°C." What topic is the teacher most likely talking about?

The most likely topic the teacher is taking about is distillation of a mixture

Explanation:

The correct question is:

Gasoline boils at a relatively low temperature (about 150°C). The kerosene is removed at around 200°C, followed by diesel oil at 300°C and fuel oil at around 370°C,"

What topic is the teacher most likely talking about?

a. distillation of a mixture

b. filtration of a pure substance

c.evaporation of a mixture

d. sorting of a pure substance

Explanation:

Distillation is the process of separating components of a mixture based on different boiling points.

To separate a mixture of liquids, the liquid can be heated to force components, which have different boiling points, into the gas phase. The gas is then condensed back into liquid form and collected.

Types of distillation include simple distillation and fractional distillation(different volatile 'fractions' are collected as they are produced). Simple distillation may be used when the boiling points of two liquids are significantly different from each other or to separate liquids from solids or nonvolatile components. Fractional distillation is used when the boiling points of the components of a mixture are close to each other.

From the question, it's the components of petroleum that are being separated, which can be carried out using fractional distillation.

The first component that is collected is

Gasoline which boils at a relatively low temperature (about 150°C), followed by

kerosene which is removed at around 200°C, followed by diesel oil at 300°C and then fuel oil at around 370°C.

vanderwaal's forces of attraction are the electrostatic intermolecular forces that exist in a molecule due to the temporary or permanent dipoles that are developed in a molecule. in , the major intermolecular forces are dipole-dipole interactions as the molecule is polar (bent structure). so the vanderwaal's forces of interaction in between molecules are the permanent dipole-dipole interactions that develop due to the dipole that exists in between the polar h - s bond. the positively charged hydrogen atom is attracted towards the negative end of the dipole that is sulfur of the adjacent molecule. therefore, these forces of attraction are relatively stronger than that of london dispersion forces that exist in non polar molecules.