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Which of the following will have a greater boiling point elevation?Select one:a.vinegar solutionb.ethanolc.sugar solutiond.glucose solution

Question

Which of the following will have a greater boiling point elevation?Select one:a.vinegar solutionb.ethanolc.sugar solutiond.glucose solution

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Solution 1

The boiling point elevation depends on the number of solute particles in a solution. This is described by the colligative property known as boiling point elevation, which states that the boiling point of a solution is higher than that of the pure solvent.

The more solute particles, the higher the boiling point. Therefore, solutions with larger amounts of solute will have a higher boiling point elevation.

a. Vinegar solution: Vinegar is a solution of acetic acid in water. It is about 5-20% acetic acid by volume.

b. Ethanol: Ethanol is a pure substance, not a solution. Therefore, it does not have a boiling point elevation.

c. Sugar solution: The amount of sugar that can be dissolved in water is quite high. A sugar solution could potentially have a high boiling point elevation if a large amount of sugar is dissolved.

d. Glucose solution: Glucose is a type of sugar. A glucose solution would have a similar boiling point elevation to a sugar solution, assuming the same amount of solute is dissolved.

Without knowing the exact concentrations of the vinegar, sugar, and glucose solutions, it's impossible to say definitively which will have the greatest boiling point elevation. However, if we assume that the solutions are saturated (meaning they contain the maximum amount of solute that can be dissolved), the sugar and glucose solutions would likely have the greatest boiling point elevations because sugar and glucose can be dissolved in water in larger amounts than acetic acid (the solute in vinegar).

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Solution 2

The boiling point elevation depends on the number of solute particles in a solution. This is described by the colligative property of solutions, which states that the boiling point elevation is directly proportional to the molal concentration of the solute particles.

Here are the steps to determine which solution will have a greater boiling point elevation:

  1. Identify the nature of the solutes: Vinegar is a weak electrolyte, ethanol is a non-electrolyte, sugar (sucrose) is a non-electrolyte, and glucose is a non-electrolyte. Electrolytes dissociate into ions in solution, increasing the number of solute particles, while non-electrolytes do not.

  2. Determine the number of particles each solute forms in solution: Vinegar (acetic acid) can dissociate into two ions (acetate and hydrogen ions), but as a weak electrolyte, it does not fully dissociate. Ethanol, sugar, and glucose do not dissociate and each form one particle in solution.

  3. Compare the number of particles: Since all the non-electrolytes form one particle in solution and vinegar, being a weak electrolyte, does not fully dissociate, none of them have a clear advantage in terms of the number of particles.

  4. Consider the concentration of the solutions: The question does not provide information about the concentrations of the solutions. If we assume that all solutions have the same concentration, then the boiling point elevation would be the same for all of them.

In conclusion, with the information given, it is not possible to definitively say which solution will have a greater boiling point elevation. If the concentrations of the solutions are different, the one with the higher concentration will have a greater boiling point elevation. If the concentrations are the same, the boiling point elevations will also be the same.

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