Home » CHEMISTRY » What technique is suitable for separating…
1 Answers

What technique is suitable for separating…

Posted by: 881 views , , , , , , , , , , , ,

What technique is suitable for separating a binary solution of potassium chloride and potassium trioxochlorate (V)?

  • A. Fractional crystallization
  • B. Fractional distillation
  • C. Filtration
  • D. Evaporation




Potassium chloride is a soluble white crystalline powder that look much like your table salt.

Potassium trioxochlorate (V) is also a soluble white crystalline powder that looks like table salt.

A binary solution of both would be attained when both salts are dissolved in water.

To separate this solution, we could employ fractional crystallization to crystallize out Potassium trioxochlorate (V) first.

Fractional crystallization uses differences in to separate solutes.

Potassium chloride has a higher solubility of 280 g/l at 273K, and

Potassium trioxochlorate (V) has a lower solubility of 31 g/l at 273K.

Now for the right answer to the above question:

  1. Option A is correct. Fractional crystallization takes advantage of differences in solubility to separate solutes.
  2. Option B is incorrect. fractional distillation not used to separate dissolved crystals, it is instead used to separate different liquids, taking advantage of their differences in points.
  3. C is incorrect. Filtration involves the use of a non-porous medium to separate undissolved solute from the solvent.
  4. D is not the correct answer. Evaporation is used to separate a dissolved solute from the solvent by taking advantage of its solubility at different temperatures. Evaporation is used when only one type of salt is dissolved in the solvent.
RELATED =>  In the diagram above, the hanging mass m2 is...


You may please note these/this:

  • While evaporation is used when only one type of solute is dissolved in a solvent, fractional crystallization is used when more than one solute is dissolved in the same solvent, this is the difference between the two.

Use the questions and answers section to correct, express, and contribute your views.

You can also share this page with friends.

/culled from 2019 -UTME Chemistry question 30/


Stay updated with our latest Secrets and Answers 😎