Question

Which of the following will be most soluble in octane?

Answer 1

Answer:

CH3CH3CH2CH3

Explanation:

Octane is a non-polar compound. It is a hydrocarbon with 8-carbon length along its chain.

It belongs to a special group of hydrocarbons called alkanes.

What makes a substance soluble in another?

   It is a common phrase that  "like dissolves like". This is applicable to solubility of substances in another.

• A polar solvent will freely and easily dissolve a polar solute. For example, water and salt.
• A non-polar solvent will also dissolve a non-polar solute. This case, hydrocarbons will dissolve themselves.
• The first option is a butane, a 4-carbon length hydrocarbon which will be dissolved in octane.
• Both compounds are non-polar.