the highest electrical conductivity of the following aqueous solution is of

1] 0.1 M acetic acid 2] 0.1M chloroacetic acid

3]0.1 M fluroacteic acid 4] 0.1 M diflouroacetic acid

To determine which of the given aqueous solutions has the highest electrical conductivity, we need to consider the degree of ionization of each acid in water. Electrical conductivity in solutions is primarily due to the presence of ions; the more ions present, the higher the conductivity. Let's break down the options you've provided.

Understanding Acid Ionization

Acids can be classified as strong or weak based on their ability to dissociate into ions in solution. Strong acids completely ionize, while weak acids only partially ionize. The degree of ionization affects the number of free ions in solution, which directly influences conductivity.

Analyzing Each Acid

• 0.1 M Acetic Acid (CH₃COOH): This is a weak acid that ionizes partially in water. The ionization can be represented as follows:
  • CH₃COOH ⇌ CH₃COO⁻ + H⁺
  The degree of ionization is relatively low, resulting in fewer ions in solution.
• 0.1 M Chloroacetic Acid (ClCH₂COOH): This is also a weak acid, but it is stronger than acetic acid due to the electronegative chlorine atom, which stabilizes the ionized form. It ionizes more than acetic acid:
  • ClCH₂COOH ⇌ ClCH₂COO⁻ + H⁺
  Therefore, it produces more ions than acetic acid, leading to higher conductivity.
• 0.1 M Fluoroacetic Acid (FCH₂COOH): Similar to chloroacetic acid, fluoroacetic acid is also a weak acid, but it is even stronger due to the presence of the fluorine atom, which is highly electronegative. It ionizes more than both acetic and chloroacetic acids:
  • FCH₂COOH ⇌ FCH₂COO⁻ + H⁺
  This results in a greater number of ions in solution, further increasing conductivity.
• 0.1 M Difluoroacetic Acid (F₂CHCOOH): This acid is the strongest among the four due to the presence of two electronegative fluorine atoms. It ionizes significantly more than the others:
  • F₂CHCOOH ⇌ F₂CHCOO⁻ + H⁺
  As a result, it produces the highest concentration of ions, leading to the highest conductivity.

Comparative Conductivity

Based on the degree of ionization, we can rank the acids in terms of their expected conductivity:

• 0.1 M Acetic Acid: Lowest conductivity due to partial ionization.
• 0.1 M Chloroacetic Acid: Higher conductivity than acetic acid due to greater ionization.
• 0.1 M Fluoroacetic Acid: Even higher conductivity due to stronger ionization.
• 0.1 M Difluoroacetic Acid: Highest conductivity because it ionizes the most.

In summary, the aqueous solution with the highest electrical conductivity among the options provided is 0.1 M Difluoroacetic Acid. This is due to its strong ionization, resulting in a greater number of ions in solution compared to the other acids listed.