Methane Solubility and Properties

The video discusses the solubility of methane (CH4) in water and other solvents. Methane is a non-polar molecule with a tetrahedral geometry, making it virtually insoluble in polar water. Only 22.7 mg/L dissolves, and solubility decreases with increasing temperature. Methane is more soluble in non-polar solvents like ethanol and benzene. The video also explains why gases become less soluble as temperature rises.

What is the molecular geometry of methane (CH4)?

• Trigonal planar

• Bent

• Linear

• Tetrahedral

Why is methane considered a non-polar molecule?

• Because all hydrogen atoms are symmetrically arranged

• Because it is soluble in water

• Because it forms hydrogen bonds

• Because it has a high electronegativity difference

How does methane interact with water?

• It forms strong hydrogen bonds

• It dissolves completely

• It does not interact much due to its non-polar nature

• It reacts chemically with water

What is the solubility of methane in water at standard conditions?

• 22.7 grams per liter

• 22.7 milligrams per liter

• 227 milligrams per liter

• 2.27 grams per liter

How does temperature affect the solubility of methane in water?

• Solubility decreases with temperature

• Solubility increases with temperature

• Solubility first increases then decreases

• Temperature has no effect

In which type of solvents is methane more soluble?

• Acidic solvents

• Ionic solvents

• Non-polar solvents

• Polar solvents

Which of the following solvents is methane likely to dissolve in?

• Ethanol

• Sulfuric acid

• Water

• Sodium chloride solution

What is a common characteristic of solvents like benzene and toluene that makes them suitable for dissolving methane?

• They are ionic

• They have a non-polar component

• They are acidic

• They are polar

What happens to the solubility of gases like methane as temperature increases?

• It increases

• It decreases

• It fluctuates

• It remains constant

What is the main takeaway regarding methane's solubility in water?

• Methane is highly soluble in water

• Methane is virtually insoluble in water

• Methane reacts with water

• Methane forms a new compound with water