Question

Choose the pair of substances that are most likely to form a homogeneous solution.

A) C₆H₁₄ and C₁₀H₂₀
B) KCl and C5H₁₂
C) N₂O₄ and NH₄I
D) C₆H₁₄ and H₂O
E) None of the pairs above will form a homogeneous solution.

Answer 1

The correct choice is A) C6H14 and C10H20, as they are both nonpolar hydrocarbons and will likely form a homogeneous solution.

Step-by-step explanation:

To choose the pair of substances that are most likely to form a homogeneous solution, we look at the solubility rules and likeness in chemical structure or polarity. Among the given choices:

• A) C₆H₁₄ (hexane) and C₁₀H₂₀ (decane) are both nonpolar hydrocarbons and will likely form a homogeneous solution due to similar intermolecular forces.
• B) KCl (potassium chloride) is an ionic compound, while C5H₁₂ (pentane) is a nonpolar hydrocarbon. Their differing polarities make them unlikely to form a homogeneous solution.
• C) N₂O₄ (dinitrogen tetroxide) and NH₄I (ammonium iodide) are also unlikely to form a homogeneous solution due to the ionic nature of NH₄I and the molecular nature of N₂O₄.
• D) C₆H₁₄ (hexane) and H₂O (water) are immiscible due to hexane being nonpolar and water being polar.
• E) None of the pairs above will form a homogeneous solution. This is incorrect because C₆H₁₄ and C₁₀H₂₀ can form a homogeneous solution.

Therefore, the correct answer is A) C₆H₁₄ and C₁₀H₂₀.