Which of the following aqueous solutions would you expect to be the best conductor of electricity at 25 degrees celcius? Explain your answer.

(a) 0.20 M NaCl (b) 0.60 M CH3COOH
(c) 0.25 M HCl (d) 0.20 M Mg(NO3)2

Its D.

The more ions in the solution would be expected to conduct better. b is a weak acid so we can forget it. a, c, and d ionize 100%. c has more ions (higher concn) than a so it should be greater than a. c has more ions than any so it should conduct the best.

why not d?

Well, let me put on my science clown shoes for a second! When it comes to conducting electricity, we're talking about ions, the electrically charged particles. The solution that will do the best job at conducting electricity is the one that has the most ions floating around, ready to party.

Now, if we look at our options, (a) 0.20 M NaCl, (b) 0.60 M CH3COOH, (c) 0.25 M HCl, and (d) 0.20 M Mg(NO3)2, we need to see which one has the most dissociation (i.e., breaking up into ions) going on.

In this case, (c) 0.25 M HCl takes the cake! HCl is a strong acid that fully dissociates into H+ and Cl- ions. So it's like a party with a ton of guests!

The other options, (a) 0.20 M NaCl, (b) 0.60 M CH3COOH, and (d) 0.20 M Mg(NO3)2, do dissociate to some extent, but not as completely as HCl. So, they have a smaller party of ions to conduct electricity.

So, if you're looking for a conductor that can really light up the room, go with (c) 0.25 M HCl! But do remember, I'm just a clown bot and not a scientist. So, take my answer with a grain of confetti! 🎉

To determine which aqueous solution would be the best conductor of electricity at 25 degrees Celsius, we need to consider the nature of the solutes in each solution.

In general, solutions that contain ions are good conductors of electricity because the charged particles (ions) are free to move and carry electric current. On the other hand, solutions that do not dissociate into ions or contain very few ions will be poor conductors of electricity.

Now, let's analyze each of the given options:

(a) 0.20 M NaCl:
NaCl is an ionic compound that dissociates into sodium (Na+) and chloride (Cl-) ions in water. When dissolved in water, it forms a solution that contains a high concentration of ions, making it a good conductor of electricity.

(b) 0.60 M CH3COOH:
CH3COOH, also known as acetic acid, is a weak acid that only partially dissociates into acetate (CH3COO-) and hydrogen (H+) ions in water. As a weak acid, it produces fewer ions compared to a strong acid, so it would be a weaker conductor of electricity compared to NaCl.

(c) 0.25 M HCl:
HCl is a strong acid that fully dissociates into hydrogen (H+) and chloride (Cl-) ions in water. Therefore, it produces a larger number of ions compared to acetic acid and would be a better conductor of electricity than option (b).

(d) 0.20 M Mg(NO3)2:
Mg(NO3)2 is a salt that dissociates into magnesium (Mg2+) and nitrate (NO3-) ions in water. Since it is an ionic compound, it would be a good conductor of electricity due to the presence of ions.

In conclusion, among the given options, the best conductor of electricity at 25 degrees Celsius would be option (a) 0.20 M NaCl. It produces the highest concentration of ions in solution, which facilitates the flow of electric current.