Hexane and Water Interactions

The video explores whether hexane (C6H14) is soluble in water (H2O). Hexane is a non-polar molecule due to the similar electronegativity of carbon and hydrogen and its symmetrical structure. In contrast, water is a polar molecule with a positive and negative side, resulting from the electronegativity difference between hydrogen and oxygen. Water molecules are attracted to each other through hydrogen bonding. When hexane is added to water, it does not mix because the non-polar hexane molecules cannot interact with the polar water molecules. Therefore, hexane is considered insoluble in water, with only a negligible amount dissolving.

What is the main question addressed in the video?

• Whether hexane is a gas at room temperature

• Whether hexane can conduct electricity

• Whether hexane is soluble in water

• Whether water is a non-polar molecule

Why is hexane considered a non-polar molecule?

• Because it is symmetrical and has no significant electronegativity difference between its atoms

• Because it has a high electronegativity difference

• Because it has a positive and negative side

• Because it can form hydrogen bonds

What is the structural formula of hexane?

• C7H16

• C6H12

• C6H14

• C5H12

What makes water a polar molecule?

• The lack of hydrogen bonds

• The electronegativity difference between hydrogen and oxygen

• The presence of carbon atoms

• The symmetrical arrangement of its atoms

How do water molecules interact with each other?

• Through ionic bonding

• Through covalent bonding

• Through hydrogen bonding

• Through metallic bonding

What is the main intermolecular force in water?

• Van der Waals forces

• Dipole-dipole interactions

• Hydrogen bonding

• Ionic bonding

Why does hexane not mix well with water?

• Because hexane is non-polar and water is polar

• Because hexane is heavier than water

• Because water is non-polar

• Because hexane is a polar molecule

What happens when hexane is added to water?

• It remains separate and does not mix

• It forms a homogeneous mixture

• It dissolves completely

• It reacts chemically with water

What is the reason for hexane's insolubility in water?

• Hexane is non-polar and water is polar

• Both hexane and water are non-polar

• Both hexane and water are polar

• Hexane is polar and water is non-polar